Epoch Batteries 36V 100Ah LiFePO4 Lithium Battery - Bluetooth, Heating, Waterproof
Get it between June 20 and June 22.
Low in stock
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At MarineXGear, we are proud to have the best refund and return policies in the industry. If you’re not satisfied with your purchase for any reason, you may return it to us within 30 days for a refund.
If you have a problem with our order (there are missing components, damages, or the product is not functioning), please reach out to us as quickly as possible. Some of the problems can be resolved by going through the product manual or the product FAQs.
Refer to our Refunds & Return Policy for more details.
Order Processing
Once we receive your order, we will send you a confirmation email. Then we will process the order by confirming that the product is in stock and ready for shipment. If any of the items in your order are back-ordered, we will reach to you via email or phone and you may choose to either wait or receive a 100% refund.
Please allow 1-3 days for processing your order.
Shipping
We ship to the lower 48 continental United States only at this time.
Shipping times and shipping method will depend on the specific product and brand you purchase. If you have any shipping question, feel free to ask on the chat or email us at info@marinexgear.com.
We will send tracking information by email the same day the shipping tracking number is created/available.
Before you sign the shipping bill, please THOROUGHLY INSPECT YOUR ITEM. Signing for the receipt of a damaged product removes the liability of the shipping company and MarineXGear. Once you accept your shipment as non-damage, your item is your property.
Epoch Batteries 36V 100Ah LiFePO4 Lithium Battery - Bluetooth, Heating, Waterproof
Engineered for performance and built to endure, this 36V 100Ah LiFePO4 Deep Cycle Battery is a rugged and intelligent power solution ideal for marine, RV, solar, and off-grid applications. Featuring IP67 waterproof and dustproof protection, it’s built to withstand harsh outdoor environments while delivering safe, reliable energy storage.
Equipped with internal heating technology, this battery supports cold-weather charging down to -4°F (-20°C), and offers real-time performance monitoring through Bluetooth-enabled iOS and Android apps. With a built-in Advanced Battery Management System (BMS), the battery offers complete protection from overcharge, over-discharge, short circuit, high current, and extreme temperature conditions.
Backed by an industry-leading 11-year warranty and a lifespan of 3,500+ cycles, this maintenance-free battery is the ultimate power upgrade for serious energy users.
🔋 Key Features
- LiFePO4 Chemistry – Safer, longer-lasting deep cycle performance
- HEATED – Internal heating enables charging in sub-zero conditions
- BLUETOOTH Monitoring – Free iOS & Android apps provide real-time diagnostics
- IP67 Rated – Fully waterproof and dustproof for outdoor durability
- Smart BMS – Protects against overcharge, over-discharge, overcurrent & temperature extremes
- Safe & Reliable – Includes high and low temperature disconnects
- 3,500+ Cycle Life – Long-lasting and maintenance-free
- 11-Year Manufacturer Warranty – Extended support and peace of mind
⚙️ Specifications
Configuration
- Cell Configuration: 12S
- Chemistry: LiFePO4
Electrical
- Capacity: 100Ah
- Voltage: 36V
- Max Charge Voltage: 43.8V
- Operating Voltage Range: 30V – 43.8V
- Max Continuous Discharge: 120A
- Max Charge Current: 150A (10 Seconds)
- Max Discharge Peak: 200A (60 Seconds)
- Max Parallel Units: 4
Temperature Ratings
- Charge Range: -20°C (-4°F) to 55°C (131°F) with heating
- Discharge Range: -20°C (-4°F) to 60°C (140°F)
- Storage Range: 0°C (32°F) to 35°C (95°F) – Up to 12 months
Dimensions & Weight
- Weight: 75 lbs
- Length: 20"
- Width: 10.25"
- Height: 11"
⚡ Charging Requirements
To ensure safe and efficient performance, verify that your charging components (inverter chargers, solar controllers, DC-to-DC chargers, etc.) can be programmed to the following specifications:
- Bulk/Absorption Voltage: 14.2V – 14.6V
- Absorption Time: ~30 minutes for 200Ah in parallel
- Float Voltage: 13.4V – 13.8V
- Equalization: 14.4V / Disabled
- Temperature Compensation: 0 / Disabled
- Charge Rate: 50% of total battery/bank capacity
- Charge Temperature: 32°F (0°C) to 131°F (55°C)
- Discharge Temperature: -4°F (-20°C) to 140°F (60°C)
- Cell Charge Temperature: 32°F (0°C) to 131°F (55°C)
Note: Not all chargers support multi-stage charging. If your charger lacks this capability, ensure it can be set to the correct Bulk/Absorption voltage, and disable other features as needed. Consult your charger manual or manufacturer for detailed setup instructions

Why Choose MarineXGear
At MarineXGear, we believe true peace of mind on the water starts with having the right equipment. Our mission is simple: to be the trusted destination for premium marine gear and dependable on-water solutions. Every product we carry — whether navigation systems, safety equipment, marine electronics, or boat accessories — is carefully chosen to help you perform at your best, stay safe, and get the most out of every voyage.
A+ Customer-First Approach
We're more than an online store — we're your partner on the water. Unlike large, impersonal retailers, our dedicated team delivers personalized guidance at every step. Whether you're outfitting a vessel for the first time, upgrading your gear, or need expert advice on a specific product, our specialists are always just a call or email away.
Passion for Wellness & Resilience
Our brand is built on a genuine love for the sea. We live and breathe marine equipment — and when you reach out to MarineXGear, you'll connect with experts who understand both the technical specs of our products and the on-water lifestyle they support.
Trusted Experts, Curated Brands
We partner directly with the most respected names in the marine industry. Our curated selection ensures every product meets our high standards for quality, durability, and performance on the water. With MarineXGear, you shop with confidence, knowing you're investing in proven gear backed by full manufacturer warranties.
More Reasons to Choose MarineXGear
- Price Match Guarantee – We’ll match any competitor to ensure you always receive the best value.
- Free Shipping – Enjoy free delivery on most orders across the lower 48 U.S. states.
- 100% Secure Ordering – Our platform uses SSL encryption to protect your information.
- Exclusive Packages & Volume Discounts – Customized solutions available for clinics, wellness centers, and large orders.
- Authorized Dealer – Every order is protected with full manufacturer support and warranties.
At MarineXGear, we're committed to keeping you safe, equipped, and confident on the water. With our expertise, personalized service, and carefully curated selection, you can invest in your vessel and your adventures with complete peace of mind.
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