36V 50Ah Trolling Motors Lithium LiFePO4 Battery, Built-in 50A BMS, 1.2C Discharge 60A Current,Deep Cycle Group31 Battery, Perfect for Trolling Motor,RV, Boat, Marine, Solar
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Availability:
19 left in stock
Arrives
Jul 9 – Jul 13
Size: 36V 50AH
Features
- Designed Specifically for Trolling MotorsThe BtrPower 36V 50Ah LiFePO4 battery is designed specifically for trolling motors with a thrust of 100120 pounds, making it an ideal choice for brands such as Minn Kota, Newport Vessel, and PEXMOR. It delivers a stable 50A continuous discharge current and supports a 60A discharge for 30 minutes during peak demand, providing a reliable 1920Wh capacity to meet the needs of all-day fishing and boating.
- Marine-Grade SafetyThe BtrPower 36V 50Ah LiFePO4 battery complies with BCI Group 31 size standards and features an IP65-rated ABS housing that is waterproof, dustproof, and salt-fog resistant. Equipped with a 50A smart BMS, it prevents overcharging, over-discharging, overcurrent, short circuits, and damage from extreme temperatures. The 36V system optimizes your power configuration by reducing current intensity, thereby lowering wiring costs and minimizing space requirements.
- Automotive-Grade LiFePO4 BatteriesFeatures UL-certified automotive-grade A+ battery cells for exceptional stability and safety. Supports over 4,000 charge/discharge cycles with a lifespan of up to 10 years. Weighing only one-third as much as lead-acid batteries, it significantly reduces hull load and improves efficiency.
- High Energy Density & Scalable SystemsThe high-energy-density design maximizes runtime without adding extra weight or taking up additional space. Supports up to 4 batteries in parallel to build a 36V 200Ah (7.68kWh) system. Suitable for applications such as marine vessels, RVs, off-grid solar systems, and backup power.
- Rigorous Safety Assurance Independently tested and certified to global standards including FCC, CE, RoHS, and UN38.3 for reliable operation.
- Warm Tips 12 m onths warranty,24-hour timely service. Note: When using for the first time and after shutting down, you need to use the charger to start up. Please read the user manual carefully before using them and if you have any questions about the batteries, please do not hesitate to contact us. We will solve your problems with enthusiasm.
Brand: Cymoye
Vehicle Service Type: RV
Size: 36V 50AH
Voltage: 12 Volts
Battery Cell Composition: Lithium-Phosphate
Item Weight: 24 Pounds
Product Dimensions: 6.7"D x 12.8"W x 8.5"H
Number Of Cells: 4
Terminal: M8
Battery Capacity: 100 Amp Hours
Compatible with Vehicle Type: RV
Voltage: 12 Volts
Number Of Cells: 4
Terminal: M8
Battery Capacity: 100 Amp Hours
Size: 36V 50AH
Item Weight: 24 Pounds
Item Dimensions D x W x H: 6.7"D x 12.8"W x 8.5"H
Battery Type: Lithium-Phosphate
Brand Name: Cymoye
Manufacturer Part Number: 36v
Model Number: 12v-2Pack/4Pack battery
Manufacturer: xiyingshidai
UPC: 755419325113
Item Type Name: 12v
Manufacturer Warranty Description: 1 year warranty
Included Components: Battery*1
Unit Count: 2 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 9 – Jul 13
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Size: 36V 50AH
I recently upgraded my RV system with two 100ah BTR LiFePO4 batteries, replacing the old lead-acid batteries, and I couldn't be happier with the change! These batteries not only offer high and stable voltage but also deliver up to 2kWh of energy, which is enough to power my RV for an entire weekend getaway. During the installation, I ran into a few technical snags, but the customer service at BTR was outstanding. They were quick to respond and extremely helpful in resolving all my issues. Their quick and efficient service really impressed me. If you're considering upgrading your RV battery system, I highly recommend BTR's LiFePO4 batteries. They not only enhance the reliability of your power supply but are also much lighter, making them easier to handle. This upgrade has been a game changer for my outdoor adventures and extended camping trips!
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Reviewed in the United States on May 13, 2024 Reviewed in the United States on May 13, 2024 by Cat
Size: 36V 50AH
These are amazing batteries. Great power for the price and the BMS and lifepo4 chemistry makes them a robust option for solar systems where they are regularly discharged and recharged. I have purchased a dozen over the years and am really happy with them. Good customer support when occasional dead on arrival happens (they can get physically damaged during shipping or occasionally have weak welds between cells). I have always had great experiences.
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Reviewed in the United States on December 26, 2025 by Amazon Customer
Size: 36V 50AH
The battery is great. I have replaced the original lead acid batteries. I wasn't sure which LiFePO4 battery should i choose. I read tons of forums and finally decided to buy the btr lifepo4 battery. I am very happy with the performance of the battery, It's also very cheap, works and is rated as advertised. The batteries arrived earlier than expected. I have two batteries, one for my trolling motor and the other for my boat lights. So far I have needed one more 12v charger for my entire deck. A standard lead acid battery is 2x the weight of both of these batteries combined. They have performed wonderfully and lightened the load on the stern of my boat. Everything's going well.
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Reviewed in the United States on June 9, 2024 Reviewed in the United States on June 9, 2024 by Matt C.
Size: 36V 50AH
Holds charge good, but keep them above 32 degrees. They hate cold weather
Reviewed in the United States on August 28, 2025 by Vince
Size: 36V 50AH
I purchased 2 of these batteries in the past for my boat and at 2 years old they are still strong. They run a pair of 12" subs, a second pair of 10" subs and eight 5" pod speakers for hours in 100+ degree heat (2000w+ of amps). They are holding up to the abuse of being aboard a 19' boat which can take a pretty good beating when the water is choppy. For charging I have twin 30A DC to DC Victron chargers so the stock 200A 12V alternator charging voltage gets profiled for the lithium bank as required. The engine still requires an AGM battery for cranking and is isolated from the lithium bank using a 2 bank blue sea battery switch. To manage this I added a Victron 25A AC OB charger setup as the AGM charger so I can just plug it in to shore power or an extension cord. This charges the engine batt and provides enough power for one of the DC to DC chargers. This setup was so sweet on the boat that I tried using four of these in parallel for my 48v EZGO TXT golf cart. Unfortunately my combination did not work since these are limited to a 100A continuous max draw when wired in series. I have a 36V GE motor that can handle 48v along with a GolfTech 550A 36v-48v speed controller and flooring it will cause an overload. The internal BMS will require you to disconnect or remove all loads to reset. I switched to four Epoch 48v 60A lithium cells providing 240A of running current when wired in parallel. That matches the stock FLA batteries max running current and doesn't overload. As this demonstrates to avoid tripping a lithium batteries internal BMS I may not need all 550A, which is the speed controllers max, but 100A is too little, particularly when starting upwards on a hill. That said, the support team worked with me to check all 4 of the batteries. The support teams engineers responded very quickly to help me diagnose the problems I was having. Once we knew this application would not work they helped me process a return. BTR has excellent customer support in my experience so if your having troubles deciding on which brand to choose ... these guys stand behind their product and you might consider giving them a try.
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Reviewed in the United States on September 8, 2023 by Amazon Customer
Size: 36V 50AH
First thing I did is test these batteries. Both tested over 100 amp hours. I have them paired up with two other batteries of another brand. They seem to be working well. After a few days of service they failed! I added them to my battery Bank and quickly noticed my capacity had not gone up. My charger started running all the time and the BTR batteries ended up taking down my whole system. I have had several of these and they have all failed. Customer service is okay. They will send you another battery that will fail in a week.
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Reviewed in the United States on August 18, 2024 Reviewed in the United States on August 18, 2024 by Ken F
Size: 36V 50AH
Tripled my run time in a camper in series over the prior lead cell. Half the weight and hours more off grid.
Reviewed in the United States on January 13, 2026 by David
Size: 36V 50AH
Great batteries
Reviewed in the United States on February 12, 2026 by Bight Bait