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Upgrade your 72V cart with a high-output LiFePO4 power system engineered for stronger acceleration, steadier voltage, and extended range.
The Epoch 72V 105Ah lithium golf cart battery kit delivers 7.39kWh (7,392Wh) of stored energy in one complete conversion package. Built for custom carts and performance-minded drivers, this Big Box Series kit (model BB72105A-Kit) replaces a bank of six lead-acid batteries with one 70.4V LiFePO4 battery and includes a 72V 15A lithium charger, a battery gauge, and a 12V converter, with Epoch Li-Ion app monitoring and IP67 protection.
Key Features
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72V 105Ah Complete Golf Cart Conversion Kit: One 70.4V (72V class), 105Ah, 7.39kWh LiFePO4 battery replaces a bank of six lead-acid batteries; performance-focused users often target 40 to 50 miles per charge in favorable conditions. Built for 72V golf carts, custom carts, neighborhood electric vehicles and utility vehicles; the stainless-steel case measures 21.7 × 13.4 × 9.9 in and weighs 132 lb.
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What's in the Kit: The battery, a 72V 15A lithium charger, a battery gauge and a 12V converter that powers lights, audio and cart accessories, plus the free Epoch Li-Ion app. Mounting brackets are not included: secure the battery with hold-down hardware rated for its 132 lb weight, and add a main fuse or DC-rated breaker close to the positive terminal.
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250A Continuous, 1,000A Peak: 250A continuous discharge, 500A for up to 15 seconds and 1,000A for up to 2 seconds for hard launches, hills and upgraded controllers. Keep controller and motor settings within these ratings, and size conductors and overcurrent protection to the 250A continuous rating.
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Regen-Ready Charging: Accepts 100A continuous charge current and up to 500A for up to 15 seconds of regenerative braking current. The included 72V 15A charger charges the battery from empty in about 7 hours.
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Gauge, App & OTA Updates: The included battery gauge and the free Epoch Li-Ion app (iOS and Android) show state of charge, voltage, current flow, temperature and battery status. Firmware can be updated over the air (OTA) through the app.
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IP67 Enclosure & Advanced BMS: Dust-tight and protected against temporary immersion to 1 m for 30 minutes; do not pressure-wash the battery. The BMS provides over-voltage, under-voltage, over-current, short-circuit and temperature protection, cell balancing and a low-charge warning.
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Temperature & Bank Limits: Charges from 0°C to 55°C (32°F to 131°F) and is not self-heated; discharges from −10°C to 55°C (14°F to 131°F). Up to 2 batteries in parallel (210Ah); series connection is not supported.
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3,500+ Cycle Life, No Watering: Rated for 3,500+ cycles, with no watering or acid service; routine inspections of the case, terminals, cables and mounting keep it operating safely.
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11-Year Limited Manufacturer Warranty: Covers qualifying defects in materials and workmanship under normal use, subject to Epoch Batteries' warranty terms. Register within 90 days of purchase for full coverage.
Key Benefits
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IP67 Waterproof: Dust-tight and protected against temporary immersion to 1 m for 30 minutes.
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3,500+ Cycle life: Over 9 years at one full cycle a day. Rated at the depth of discharge, charge rate and temperature stated on the datasheet, to its end-of-life capacity.
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iOS + Android Bluetooth app: Charge, voltage and temperature on your phone in the Epoch Li-Ion app.
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Advanced BMS Protection: Guards against overcharge, over-discharge, overcurrent and short circuit.
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LiFePO4 Thermal stability: Lithium iron phosphate has a far lower thermal-runaway risk than other lithium chemistries. The BMS adds over-temperature and low-temperature charge protection.
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72V 15A charger: Included
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Battery gauge: Included
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12V converter: Included
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Bluetooth app: iOS and Android
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11-year warranty: Limited manufacturer warranty
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Advanced BMS: Built-in protection
One Battery Replaces a Six-Battery Lead-Acid Bank
A lightweight 72V battery upgrade built to transform cart performance.
Heavy lead-acid banks make 72V carts feel sluggish, especially under hard acceleration, hill climbs, or passenger load. Replacing six bulky lead-acid batteries with one lithium golf cart conversion kit can remove significant weight from the chassis, improving power-to-weight ratio, handling feel, braking load, and overall drivability.
Because LiFePO4 delivers a flatter voltage curve than lead-acid, the cart receives more consistent power as the battery discharges. That means less voltage sag, stronger pull under load, and a more consistent driving experience from the beginning of the ride to the end.
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Consistent Power and Less Voltage Sag: The LiFePO4 flat voltage curve helps maintain stronger power delivery compared with lead-acid batteries that steadily lose voltage as they drain. It is a major advantage for drivers who want reliable torque, speed consistency, and predictable performance.
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The Complete High-Performance Bundle: This 72V golf cart conversion kit includes the battery, a 72V 15A lithium charger, a battery gauge, and a 12V converter: the core components for a cleaner lithium conversion. Mounting brackets are not included, and only authorized mechanics or technicians should install the battery.
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Smart Bluetooth App Monitoring: Built-in Bluetooth connects to the free Epoch Li-Ion app for iOS and Android, so you can check state of charge, voltage, current flow, temperature, and battery status from your phone and install firmware updates over the air.
Built for 72V Performance Carts
High current output, complete kit hardware, and sealed durability.
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250A continuous discharge: Supports demanding 72V golf cart systems and high-load acceleration events within BMS limits.
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1,000A peak output: 500A for up to 15 seconds and 1,000A for up to 2 seconds for hard launches, hills, and high-surge demands.
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500A regen / peak charge: Accepts up to 500A for up to 15 seconds of regenerative braking current; the continuous charge limit is 100A.
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100A max continuous charge: The included 72V 15A charger charges the battery from empty in about 7 hours.
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IP67 waterproof protection: Dust-tight and protected against temporary immersion to 1 m for 30 minutes; do not pressure-wash the battery.
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Over-the-air updates: Firmware updates install over the air through the Epoch Li-Ion app.
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Max 2 in parallel: Expand to 210Ah and 14.784kWh with two matched batteries in parallel; series connection is not supported.
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12V accessory power: The included 12V converter runs lights, audio, and cart accessories; never power them directly from the 72V battery.
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Advanced BMS: Over-voltage, under-voltage, over-current, short-circuit, and temperature protection with cell balancing and a low-charge warning.
Performance-Focused Golf Cart Applications
Designed for high-output 72V lithium golf cart conversions.
- 72V golf cart conversion and lithium replacement projects.
- Custom carts where speed, torque, and hill-climbing response matter.
- Club Car, EZGO, Yamaha, and other 72V-compatible platforms when fitment and system requirements match.
- Aftermarket controller and motor systems configured within the battery’s published BMS limits.
- Neighborhood electric vehicles and utility vehicles where the application requirements match the battery's specifications.
- 12V lights, audio, and cart accessories through the included 12V converter.
- Parallel expansion to two batteries (210Ah) for more runtime; series connection is not supported.
IP67 Waterproof Durability
Fully dustproof and protected for rugged cart environments.
The IP67 enclosure is dust-tight and protected against temporary immersion up to 1 meter for 30 minutes. IP67 covers dust and temporary immersion only: do not pressure-wash the battery, avoid locations where water can pool around terminals or connectors, route cables properly, mount the battery securely, and inspect the battery and connectors after any immersion.
Suitable For:
- 72V golf cart conversion and lithium replacement projects.
- Custom carts where speed, torque, and hill-climbing response matter.
- Club Car, EZGO, Yamaha, and other 72V-compatible platforms when fitment and system requirements match.
- Aftermarket controller and motor systems configured within the battery’s published BMS limits.
- Neighborhood electric vehicles and utility vehicles where the application requirements match the battery's specifications.
- 12V lights, audio, and cart accessories through the included 12V converter.
- Parallel expansion to two batteries (210Ah) for more runtime; series connection is not supported.
- 72V golf carts
- Custom performance golf carts
- Neighborhood electric vehicles and utility vehicles
- Golf carts with 12V lights and accessories
Certifications & Standards
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IP67 (Ingress protection, IEC 60529): Dust-tight, and protected against temporary immersion in up to 1 m of water for 30 minutes. Under IEC 60529 the first digit rates solids and the second rates water. Sealed against dust and dirt; temporary immersion to 1 m for 30 minutes; not rated for water jets or pressure washing.
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UL 1642; IEC 62619:2022: Cell-level certifications (the cells used in this battery, not the complete battery assembly).
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CE; RoHS: Product compliance markings listed in the technical specifications.
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UN 38.3: Transport (shipping) classification listed in the technical specifications.
Please Note: Mounting brackets are not included: secure the battery with hold-down hardware rated for its 132 lb (60 kg) weight
Please Note: Installation should be done by an authorized mechanic or technician, following the user manual
Please Note: Not included: a main fuse or DC-rated breaker; install one as close as practical to the battery positive terminal
Please Note: Keep controller and motor settings within the battery ratings, and size conductors and overcurrent protection to the 250A continuous rating
Please Note: Never power 12V accessories directly from the 72V battery; use the included 12V converter
Please Note: Any other charging source must be a 72V-class LiFePO4 charger programmed with Epoch's settings; stop using lead-acid chargers unless specifically approved and programmed for this battery
Please Note: Not self-heated: the BMS blocks charging outside 0°C to 55°C (32°F to 131°F)
Please Note: Parallel only, up to 2 matched batteries (210Ah, 14.784kWh) with equal-length cables and a fuse on each battery branch; series connection is not supported
Please Note: Do not mix lithium and lead-acid batteries in the same bank
Please Note: Do not pressure-wash the battery
Please Note: Range of 40 to 50 miles is what performance-focused users often target in favorable conditions, not a rated figure
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Specifications
General
Brand: Epoch Batteries
Model / SKU: BB72105A-Kit (confirm the model on the battery label)
Series: Big Box Series / golf cart complete kit
Battery type: LiFePO4 golf cart battery, 72V class
Included accessories: 72V 15A lithium charger, battery gauge, and 12V converter
Not included: Mounting brackets (secure the battery with hold-down hardware rated for 132 lb / 60 kg) and a main fuse or DC-rated breaker (install it as close as practical to the battery positive terminal)
Chemistry: LiFePO4 / Lithium iron phosphate
Cell type: Prismatic LiFePO4
Cell configuration: 22S1P (22 cells in series)
Bluetooth: Yes — Epoch Li-Ion app (iOS and Android)
Software updates: Yes — over the air (OTA) through the Epoch Li-Ion app
Self-heating: No
Low-temperature charge protection: Yes
Cycle life: 3,500+ cycles
Warranty: 11-year limited manufacturer warranty; register within 90 days of purchase for full coverage
Voltage and capacity
System voltage class: 72V golf cart system
Nominal voltage: 70.4V (72V class)
Nominal capacity: 105Ah
Energy stored: 7.39kWh (7,392Wh) nominal
Operating voltage range: 55.0V – 79.2V
Maximum charge voltage: 79.2V
Power-down state: Any cell below 2.2V
Self-discharge: 3% per month
Discharge and charge ratings
Maximum continuous discharge: 250A
Peak discharge: 500A for up to 15 seconds; 1,000A for up to 2 seconds
Maximum continuous charge: 100A
Peak charge / regen: 500A for up to 15 seconds (regenerative braking)
C-rates: 250A discharge = 2.38C; 100A charge = 0.95C (1C = 105A)
Series and parallel configuration
Parallel connections: Max 2 batteries in parallel
Maximum expanded capacity: 210Ah / 14.784kWh
Series connections: Not supported (72V system class)
Temperature
Charge temperature range: 0°C to 55°C / 32°F to 131°F (not self-heated; the BMS blocks charging outside this range)
Discharge temperature range: -10°C to 55°C / 14°F to 131°F
Recommended storage temperature: 0°C to 35°C / 32°F to 95°F, up to 12 months
Storage temperature (up to 1 month): -20°C to 55°C / -4°F to 131°F
Dimensions and mechanical
Dimensions: 21.7 in L × 13.4 in W × 9.9 in H (550 × 340 × 250 mm)
Weight: 132 lb (60 kg)
Case material: Stainless steel
Enclosure protection: IP67 per IEC 60529: dust-tight and protected against temporary immersion (1 m, 30 min); do not pressure-wash
Terminal type: M8 female
Controls and ports: On/off switch, communication port, vent, positive and negative terminals
Recommended charging settings
Charger: 72V 15A lithium charger (included)
Charge time: About 7 hours from empty with the included charger
Required charger type: Any other charging source must be a 72V-class LiFePO4 charger programmed with these settings
Maximum continuous charge current: 100A
Bulk / absorption voltage: 78.1V – 79.2V
Absorption end condition: Charge current ≤ C/20 (5.25A) or 15 minutes, whichever comes first
Float voltage: Disabled preferred, or 73.3V – 74.8V
Re-bulk voltage: 72.6V
Temperature compensation: 0 mV/°C (off)
Equalization: Disabled
Battery charge temperature range: 0°C to 55°C / 32°F to 131°F
BMS high-voltage cutoff: 79.2V
SoC recalibration voltage: 79.2V
Charger restart: Below about 95% state of charge, if the included charger stays connected
BMS protection
Protection functions: Over-voltage, under-voltage, over-current, and short-circuit protection; charge, discharge, ambient, and MOSFET temperature protection
Cell balancing: Integrated; cell-unbalance alarm
Low-charge warning: Buzzer and flashing gauge warning below 20% state of charge
Compliance and shipping
Cell-level certifications: UL 1642; IEC 62619:2022 (the cells used in this battery, not the complete battery assembly)
Product: CE; RoHS
Shipping classification: UN 38.3
IP rating: IP67 per IEC 60529
In the Box
- 70.4V (72V) 105Ah LiFePO4 golf cart battery
- 72V 15A lithium charger
- Battery gauge
- 12V converter for lights, audio and cart accessories
- Access to the free Epoch Li-Ion app (iOS and Android)
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Recommended Charging Settings
Recommended charging settings for this kit, as listed by Epoch.
- Charger: 72V 15A lithium charger (included)
- Charge Time: About 7 h from empty with the included charger
- Bulk / Absorption Voltage: 78.1 - 79.2V
- Absorption End: Charge current ≤ C/20 (5.25A) or 15 min, whichever comes first
- Float Voltage: Disabled (preferred) or 73.3 - 74.8V
- Re-Bulk Voltage: 72.6V
- Temperature Compensation: 0 mV/°C (off)
- Equalization: Disabled; do not use desulfation or repair modes
- BMS High-Voltage Cutoff / SOC Recalibration: 79.2V
- Charger Restart: Below about 95% SOC, if the included charger stays connected
- Charge Current Limits: 100A continuous; up to 500A for up to 15 s of regenerative braking
- Charge Temperature: 0°C to 55°C (32°F to 131°F); not self-heated, so let a cold battery warm above freezing before charging
- Other Chargers: Any other charging source must be a 72V-class LiFePO4 charger programmed with these settings
- Lead-Acid Chargers: Stop using them unless they are specifically approved and programmed for this battery's LiFePO4 requirements
- Charging Habits: Charge after each day's use, or at least once a week with occasional use; avoid letting the state of charge fall below 20%, and disconnect the charger once the battery is full rather than leaving it plugged in for long periods
- Power-Down Recovery: If any cell falls below 2.2V, switch the battery on, then connect the charger immediately
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BB72105A-Kit Spec Sheet
BB72105A-Kit User Manual
BB72105A-Kit Technical Data Sheet
Safety Data Sheet (SDS)
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Will upgrading to this 72V lithium battery actually make my golf cart faster?
Upgrading to this 72V lithium golf cart battery can noticeably improve acceleration, hill-climbing feel, and power consistency by removing significant lead-acid weight and maintaining a flatter LiFePO4 voltage curve as the battery discharges. Actual top speed depends on your cart, controller, motor, tire size, programming, terrain, and total load.
Can this battery handle upgraded aftermarket motors and controllers?
Yes, this kit is built for high-performance 72V golf cart applications with a 250A maximum continuous discharge rating, 500A for up to 15 seconds, and 1,000A for up to 2 seconds. Always confirm your controller settings, motor demand, cable sizing, and fuse protection stay within Epoch's published BMS limits.
What kind of range can I expect from the 105Ah capacity?
Range and speed depend on the full cart build: cart weight, passenger load, tire size, terrain, speed, controller tune, and driving habits. Performance-focused users often target 40 to 50 miles in favorable conditions. For more runtime, two matched batteries can be connected in parallel for 210Ah and 14,784Wh.
Do I need to buy a separate charger for this 72V lithium kit?
No. This complete 72V golf cart conversion kit includes a 72V 15A lithium charger, along with a battery gauge and 12V converter, and the included charger charges the battery from empty in about 7 hours. Stop using lead-acid chargers unless they are specifically approved and programmed for this battery's LiFePO4 charging requirements.
How long does it take to charge, and how often should I charge it?
About 7 hours from empty with the included 72V 15A lithium charger. Charge after each day's use, or at least once a week with occasional use, and avoid letting the state of charge fall below 20%. If the charger stays connected, it restarts charging when the state of charge drops below about 95%, but disconnect it once the battery is full rather than leaving it plugged in for long periods.
Can I charge the battery in freezing weather?
No. This battery is not self-heated, and the BMS blocks charging outside 0°C to 55°C (32°F to 131°F), so let a cold battery warm above freezing before charging. It can discharge from -10°C to 55°C (14°F to 131°F).
How is this lithium conversion kit installed?
Installation should be done by an authorized mechanic or technician, following the steps in the user manual: remove the entire lead-acid bank, prepare hold-down hardware rated for the battery's 132 lb (60 kg) weight (mounting brackets are not included), install the charger, mount the battery gauge (and the on/off switch, if supplied) on the dashboard, route the wiring harness, secure the battery, connect the charger and the cart's main cables observing polarity, and install the 12V converter for the 12V accessory circuits. Then turn the battery on, confirm the gauge shows the state of charge, and charge it before first use if the charge is low. A main fuse or DC-rated breaker close to the battery positive terminal is required and is not part of the kit.
Can I connect two 72V 105Ah kits together for more range?
Yes, in parallel only. This model supports up to two batteries in parallel, which create a 72V-class bank with 210Ah of capacity and 14.784kWh of stored energy. Do not wire these batteries in series. Use matched BB72105A-Kit batteries of similar age, condition, and firmware at the same state of charge, with equal-length cables and a fuse on each battery branch.
Does this 72V kit include Bluetooth monitoring?
Yes. The battery's built-in Bluetooth connects to the free Epoch Li-Ion app for iOS and Android, so you can check state of charge, voltage, current flow, temperature, and battery status from your phone and install firmware updates over the air. The included battery gauge shows the state of charge and warnings on the dashboard.
Is the battery waterproof for outdoor golf cart use?
Yes. The battery is rated IP67, meaning it is dust-tight and protected against temporary immersion in water up to 1 meter for 30 minutes. IP67 covers dust and temporary immersion only, so do not pressure-wash the battery, install it securely, avoid locations where water can pool around terminals or connectors, and inspect it after any immersion.
Can I mix this 72V lithium kit with my existing lead-acid batteries?
No. Do not mix lithium and lead-acid batteries in the same golf cart battery bank. Their voltage curves, charging requirements, and internal resistance are different. Replace the lead-acid bank completely with the lithium kit and use compatible charging equipment.
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Epoch Batteries Limited Warranty
Warranty Period
11-year limited manufacturer warranty covering qualifying defects in materials and workmanship under normal use, subject to Epoch Batteries' warranty terms
Register within 90 days of purchase for full coverage
Epoch Batteries-branded products are covered against qualifying defects in materials and workmanship for the applicable warranty period, subject to Epoch's model-specific remedy schedule and the terms of its warranty policy. Epoch-branded chargers carry a 2-year limited warranty and accessories (such as fuel gauges and voltage reducers) a 1-year limited warranty, from the original purchase date.
Registration
Register your battery with Epoch within 90 days of purchase for full warranty coverage. If it is not registered within that time, the warranty period begins from the battery's original manufacturing date. Proof of ownership is required for any claim, and coverage is non-transferable and applies only to the original purchaser.
Remedy
After inspection and testing, Epoch will provide the applicable remedy for a qualifying manufacturing defect: an approved repair, a replacement, or a comparable-product offer according to the model's schedule. Typical repair turnaround is 3–10 business days once the product is received.
Exclusions
Coverage may be denied when a failure is caused by misuse, improper handling, installation or storage, or use outside the product's specifications. Examples include an unsecured battery; loose, corroded or improperly connected terminals; series or parallel connections beyond the manufacturer's recommendations; reverse polarity or short circuits; impact, fire or water submersion; storage above 140°F or below -40°F; prolonged storage fully discharged or batteries left uncharged for more than three months; poor crimps, undersized cables or damaged wiring; opened, modified or tampered products; and use in applications the battery was not designed for, including repeated engine starting on non-cranking models.
Obtaining Warranty Service
Start a claim through the Epoch Batteries Warranty Portal with your model and serial number, proof of purchase, a description of the issue and supporting photos or videos. If approved, Epoch provides an RMA number and packing instructions. Do not ship a product without a valid RMA. The customer arranges and pays for shipment to Epoch, packaged in compliance with lithium battery shipping rules. Epoch Batteries can be reached at 1-888-501-1846 or support@epochbatteries.com.
Visit Epoch's Warranty Page to review the full warranty terms.
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Shipping is typically through freight carriers and the actual shipping time is contingent on your location and the specific warehouse dispatching your order. Please allow for a 1-3 business day processing period before shipment, and an estimated delivery time of up to 7 business days. Your confirmation email will include delivery details and we will send you a tracking number as soon as one is available. If you ordered several separate items, you may receive multiple tracking numbers. Once the item has been shipped, the freight service will contact you to coordinate the date and time of delivery. If you require any special accommodations during delivery please let us know as soon as possible and let the delivery company know when arranging the appointment.
Typically, orders will be dropped off either curbside or outside your front door or garage. It is your responsibility to bring the order inside or to its final destination and to remove any existing items.
Depending on the item, parts may be shipped in multiple boxes, and assembly may be required. When your order is delivered, please check that you have all pieces of the item and that nothing is damaged. If your order is damaged during transit and external damage is visible, note the damage immediately, write it on the delivery documents, take photos and/or videos, and refuse shipment. If there is no visible external damage, accept the package but note “subject to concealed damage” on the delivery documents. Any damage upon delivery needs to be reported within 24 hours of delivery or you may not be eligible for a refund. For additional information on submitting claims, as well as incorrect item exchanges, and replacements, please see our Refund Policy.
For more information about shipping, please visit our complete Shipping Policy.
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Why Shop With Eco Emperor?
At Eco Emperor, our mission is to empower you to lead a sustainable and fun lifestyle with ease and confidence. Whether you're upgrading your outdoor experience or enhancing your eco-conscious journey, here’s why choosing us is a decision you can feel great about:
Expert and Customized Care
Our knowledgeable and friendly team is here to support you every step of the way. We pride ourselves on providing personalized service and swift responses to ensure a smooth and satisfying experience. Our dedicated team is available via phone, email, and live chat to provide you with prompt and helpful support.
Authorized Retailer of High-Quality, Trusted Products from Leading Brands
We partner with the best brands in the industry to bring you reliable, high-quality products. As authorized retailers, we guarantee authenticity and offer full manufacturer warranties on every item. You can trust that our products are built to last and perform efficiently.
Free & Fast Shipping
We know you’re eager to begin your new products or start your next outdoor adventure. That’s why we prioritize quick, reliable, and free shipping to get your orders to you on time and in perfect condition.
Competitive Pricing
We believe that sustainable living should be accessible to everyone. We offer competitive pricing on all our products, so you can enjoy high-quality eco-friendly solutions and outdoor products without breaking the bank.
Choose Eco Emperor for all your outdoor and eco-friendly product needs, and become part of a movement that’s embracing a more sustainable and adventurous lifestyle.
Thank you for supporting a greener, cleaner future, while enhancing your outdoor experiences and powering your adventures.💚
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