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The Epoch 48V 65Ah Big Box Series kit is a complete lithium conversion for compatible 48V golf carts. One 51.2V, 65Ah, 3.33kWh LiFePO4 battery replaces a heavy lead-acid bank, and the kit includes the onboard charger, dash gauge, remote switch, 12V converter, charge port plug and mounting brackets matched to your cart. Configurations are available for Club Car Precedent, EZGO RXV, EZGO TXT, Yamaha 2007-2010, Yamaha 2011+ and Other compatible 48V carts.
At 66 lb, the battery delivers 200A continuous and 700A peak for up to 2 seconds, accepts regenerative braking current, and needs no watering or acid service. Built-in Bluetooth, an advanced BMS and an IP67 stainless-steel enclosure come standard, backed by an 11-year limited manufacturer warranty and a 3,500+ cycle rating. Epoch estimates about 25 to 35 miles per charge for stock or mildly upgraded carts.
Key Features
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Complete conversion kit: Battery, 48V 10A onboard lithium charger, extension cord, gauge, remote switch, 12V converter, charge port plug and cart-specific brackets in one kit.
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Lightweight upgrade: One 66 lb LiFePO4 battery replaces a full lead-acid bank for better acceleration feel, hill response and braking.
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200A continuous, 700A peak: 300A for up to 15 seconds and 700A for up to 2 seconds for acceleration and hills on stock and mildly upgraded carts.
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Regen-ready charging: Accepts 100A continuous charge and up to 300A for 15 seconds of regenerative braking; the included charger fills it from empty in about 6.5 hours.
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Gauge, app and OTA updates: The dash gauge and Epoch Li-Ion app show state of charge, voltage, current, temperature and warnings, with over-the-air firmware updates.
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IP67 and advanced BMS: Dust-tight and protected against temporary immersion to 1 m for 30 minutes, with full BMS protection and cell balancing.
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12V accessory power: The fused 25A step-down converter with key-on wire runs 12V lights, radios and USB outlets from the 48V battery.
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3,500+ cycles, no watering: Long LiFePO4 cycle life with no water refills, acid service or equalization.
What's Included
- 1 x 48V 65Ah LiFePO4 golf cart battery (51.2V, 3.33kWh, stainless-steel IP67 case with built-in Bluetooth and BMS)
- 1 x 48V 10A onboard lithium charger, powered through the cart's charge port
- 1 x 10 ft heavy-duty extension cord (cart charge port to a standard 120V outlet)
- 1 x Digital Bluetooth battery gauge (dash mount)
- 1 x 6 ft remote on/off power switch with wiring harness
- 1 x Fused 48V to 12V step-down converter (25A) with key-on wire; input 40-90V, regulated 13.5V output
- 1 x Cart-specific charge port plug (replaces the factory lead-acid receptacle)
- 1 x Cart-specific mounting brackets
- Access to the Epoch Li-Ion app for iOS and Android
Cart Configurations
- Club Car Precedent (BB5165A-Kit-1): verify tray and On-Board Computer (OBC) requirements; an OBC bypass may be needed
- EZGO RXV (BB5165A-Kit-2)
- EZGO TXT (BB5165A-Kit-3)
- Yamaha 2007-2010 (BB5165A-Kit-4)
- Other (BB5165A-Kit-5): ICON and other compatible 48V carts; confirm tray space for the 17.20 x 14.33 x 7.48 in case, mounting, cable routing and charge-port wiring
- Yamaha 2011+ (BB5165A-Kit-6)
- The charge port plug and mounting brackets are matched to the configuration you choose
Charging
- Included 48V 10A charger charges from empty in about 6.5 hours
- Maximum charge voltage 58.4V; charger restarts below about 95% state of charge if left connected
- Charge only between 0°C and 55°C (32°F to 131°F); there is no internal heater
- Do not use lead-acid chargers unless confirmed and programmed for LiFePO4; never use equalization, desulfation or repair modes
Not Included
- A main fuse or DC-rated circuit breaker for the battery cables; install one as close as practical to the battery positive terminal
- 13 ft extended harness for stretched carts (available separately)
Suitable For:
- Club Car Precedent, EZGO RXV and EZGO TXT 48V carts
- Yamaha 2007-2010 and 2011+ 48V carts
- ICON and other compatible 48V carts (Other configuration)
- Neighborhood electric vehicles and utility vehicles
- Campground and resort carts
- Golf carts with 12V lights and accessories
Please Note: Not a drop-in replacement for every installation; confirm the battery bay fits the 17.20 x 14.33 x 7.48 in case and check terminal clearance, cable routing and charge-port wiring
Please Note: Installation should be done by an authorized mechanic or technician
Please Note: Heavily modified carts with high-amp aftermarket controllers, aggressive motor upgrades, oversized tires or steep hill use may need a larger-capacity kit
Please Note: Size conductors and overcurrent protection to the 200A continuous rating
Please Note: Replacing the factory charging receptacle with the included charge port plug is required for safety
Please Note: Club Car carts with an On-Board Computer (OBC) may need an OBC bypass
Please Note: No internal heater; let a cold battery warm above freezing before charging
Please Note: Parallel only, up to 2 batteries (130Ah); series connection is not supported
Please Note: IP67 is not rated for water jets or pressure washing
Please Note: Range varies with cart weight, passengers, terrain, tires, controller settings and driving style
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Specifications
Cell Configuration: 16S1P
Chemistry: LiFePO4
Ah Capacity: 65Ah
Energy: 3.33kWh (3,328Wh)
Max Continuous Discharge Amps: 200A
Max Charge Current Amps: 100A Continuous, 300A (up to 15 Seconds, regenerative braking)
Max Discharge Peak Current Amps: 300A (up to 15 Seconds), 700A (up to 2 Seconds)
Series | Parallel: Parallel only, max 2 (130Ah); series not supported
Voltage: 51.2V
Max Charge Voltage: 58.4V
Operating Voltage Range: 40 - 58.4V
Charge Temp Range: 0°C (32°F) / 55°C (131°F)
Discharge Temp Range: -10°C (14°F) / 55°C (131°F)
Storage Temp: 0°C (32°F) / 35°C (95°F) (Max 12 Months)
Weight: 66 lbs
Length: 17.20 in
Width: 14.33 in
Height: 7.48 in
IP Rating: IP67
Cycle Life: 3,500+ cycles
Bluetooth: Yes
Internal Heating: No
BMS Protection: Over Voltage, Under Voltage, Over-Current, Short Circuit, Over Temperature, Under Temperature
In the Box
- 1 x 48V 65Ah LiFePO4 golf cart battery
- 1 x 48V 10A onboard lithium charger
- 1 x 10 ft heavy-duty extension cord
- 1 x Digital Bluetooth battery gauge
- 1 x 6 ft remote on/off power switch with wiring harness
- 1 x 48V to 12V step-down converter (25A)
- 1 x Cart-specific charge port plug
- 1 x Cart-specific mounting brackets
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BB5165A-Kit-1 Spec Sheet
BB5165A-Kit-1 User Manual
BB5165A-Kit-1 Technical Data Sheet
Safety Data Sheet (SDS)
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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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