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The Epoch 36V 100Ah LiFePO4 battery (B36100A-A) stores 3.84kWh at 38.4V for serious 36V trolling motor runtime. One battery can replace a three-battery 12V lead-acid trolling-motor bank, cutting weight and interconnect cables on bass boats, pontoons, skiffs and bay boats.
An IP67 enclosure, internal heating for cold-weather charging, Bluetooth monitoring and an included 10-segment battery meter keep you informed on the water. A smart BMS, 3,500+ cycle life and an 11-year limited manufacturer warranty (register within 90 days) back it up.
Key Features
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120A continuous output: 120A maximum continuous discharge (50A recommended) with a 200A peak for up to 60 seconds.
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100A charging: Accepts up to 100A continuous charge (50A recommended) and 150A for up to 10 seconds from 36V LiFePO4 equipment.
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Internal heating: Warms the cells before charging in cold weather, so the battery is rated to charge from -20°C (-4°F).
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Bluetooth monitoring: The Epoch Li-Ion app shows state of charge, voltage, current, temperature, cycle data and battery status.
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10-segment meter included: Shows remaining charge in 10% steps and sounds an alarm at 10%; a lid power button switches the battery on and off.
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IP67 waterproof: Dust-tight and protected against temporary immersion to 1 m for 30 minutes.
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Parallel expansion: Up to 4 matched batteries in parallel for 400Ah (15.36kWh).
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3,500+ cycle life: Low-maintenance LiFePO4 with no watering or acid service.
Recommended Charging Settings
- Maximum continuous charge current: 100A per battery, all charging sources combined
- Recommended charge current: 50A (0.5C)
- Peak charge current: 150A for up to 10 seconds
- Bulk/absorption: 42.6V-43.2V
- Absorption end: charge current ≤ C/20 (5A) or 15 minutes, whichever comes first
- Float: disabled (preferred) or 40.0V-40.8V
- Re-bulk: 39.6V
- Temperature compensation: 0 mV/°C (off)
- Equalization: disabled; no lead-acid equalization, desulfation or repair modes
- BMS high voltage cutoff and SoC recalibration: 43.8V
- Alternators: a DC-to-DC charger programmed for LiFePO4 is highly recommended
- Do not use 12V, lead-acid, AGM or gel chargers or profiles
Runtime Planning
- Epoch plans on 80% of nominal energy: about 3,072Wh (80Ah) per battery
- Roughly 8 hours at a 10A load, 12.3 hours at 250W or 6.1 hours at 500W
- The Epoch 36V 15A LiFePO4 charger (CHG-36V15A) recharges from fully discharged in roughly 6.7–7 hours, plus taper and balancing time
Suitable For:
- 36V trolling motors
- Bass, bay and fishing boats
- Pontoons, skiffs and aluminum boats
- Replacing a three-battery 12V trolling motor bank
- Marine house power (36V systems)
- Off-grid solar and inverter systems (36V)
- Cabins and backup power
Please Note: Deep-cycle only: not for engine cranking, outboard starting or golf carts.
Please Note: Do not connect in series; parallel only, up to 4 matched batteries.
Please Note: Size loads, conductors and overcurrent protection to the 120A continuous rating; the 200A rating applies for up to 60 seconds only.
Please Note: Not a drop-in for every lead-acid or AGM installation: confirm tray space, hold-downs, terminal clearance, cable size and charger profile.
Please Note: Not rated for water jets, pressure washing or long-term submersion; do not mount where water can pool.
Please Note: The BMS does not replace a fuse or DC-rated breaker close to the battery positive.
Please Note: During cold-weather warm-up the app may show little or no charge current; leave the charger connected.
Please Note: Confirm the ratings on your battery label before raising a charger's current limit; earlier production may carry different ratings.
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Specifications
Dimensions (L x W x H): 20 x 10.25 x 11 in
Weight: 75 lb
Cell Configuration: 12S
Chemistry: LiFePO4
Voltage: 38.4V
Max Charge Voltage: 43.8V
Operating Voltage Range: 30.0 - 43.8V
Ah Capacity: 100Ah
Max Continuous Discharge Amps: 120A (50A recommended)
Max Charge Current Amps: 100A (50A recommended); 150A peak for up to 10 Seconds
Max Discharge Peak Current Amps: 200A (up to 60 Seconds)
Series | Parallel: Parallel only: Max (4) in Parallel (400Ah); do not connect in series
Charge Temp Range: -20°C (-4°F) / 55°C (131°F) (with heating)
Discharge Temp Range: -20°C (-4°F) / 60°C (140°F)
Storage Temp: 0°C (32°F) / 35°C (95°F) (recommended; max 12 Months)
BMS Protection: Over Voltage, Under Voltage, Over-Current, Short Circuit, Over Temperature, Under Temperature
Model / SKU: B36100A-A
Cell Type: Prismatic LiFePO4
Energy Stored: 3.84kWh (3,840Wh) nominal
Recommended Discharge Current: 50A (0.5C)
Cell Charge Temperature Range: 0°C to 55°C / 32°F to 131°F
Reconnect Temperature: 50°C / 122°F
On/Off Control: Power button on the lid; blue LED when on
Battery Meter: 10-segment meter, included
Case Material: ABS and PC blend, UL94-V0 flame rating
Enclosure Protection: IP67 per IEC 60529 — dust-tight; temporary immersion to 1 m for 30 minutes; not for water jets or pressure washing
Terminal Type: M8 female
Cycle Life: 3,500+ cycles
Cell-Level Certifications: UL 1642, IEC 62619:2022 (cells, not the complete battery)
Compliance: CE, RoHS; UN 38.3, Class 9
In the Box
- 36V 100Ah LiFePO4 battery (B36100A-A)
- 10-segment battery meter
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B36100A-A Spec Sheet
B36100A-A User Manual
B36100A-A Technical Data Sheet
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Epoch Batteries Limited Warranty
Warranty Period
11-year limited manufacturer warranty; 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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