what is the internal resistance of one of these batteries?

Thank you for your question, the internal resistance is around 30-50 milliohms.

Can this be used to power a 12v winch

Thank you for your question, you need to check what is the working current of power a 12v winch, the working current of our 36Ah battery is 36A, if the current is less than or equal to 36A then you can use it.

Can 6 of these be hooked up in series? my ups has a 72v setup. i would like to use these batteries instead but can’t find specifics.

Thank you for your question, there is no substitute as our batteries can only be connected in series with a maximum of 4.

Can this be used with a Batcaddy golf cart?

Thank you for your question, yes, if you are using two or more batteries in series, it is recommended that you use a Lifepo4 charger to charge the batteries.

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🔋 Power your life smarter, longer, and safer with NERMAK LiFePO4!

EXPANDABLE ENERGY - Connect up to 4 batteries in series or parallel for scalable power solutions
SMART SAFETY TECH - Integrated BMS guards against overcharge, over-discharge, and short circuits
UNMATCHED LONGEVITY - Outlasts traditional lead-acid batteries by 4x with 2000+ reliable cycles
VERSATILE COMPATIBILITY - Perfect for solar setups, emergency lighting, outdoor gear, and more
POWERFUL STABLE OUTPUT - Delivers up to 8A continuous discharge for demanding devices

The NERMAK 12V 7.2Ah LiFePO4 deep cycle battery offers a high-energy, eco-friendly power source with over 2000 charge cycles, built-in 8A battery management system for enhanced safety, and versatile use cases from solar energy to outdoor electronics. Compact and expandable, it’s designed for professionals who demand reliable, maintenance-free power that keeps pace with their dynamic lifestyle.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Manufacturer	NERMAK
Brand	NERMAK
Model	lifepo4
Item Weight	2 pounds
Product Dimensions	5.94 x 2.56 x 3.71 inches
Item model number	12V7A
Batteries	1 Lithium Ion batteries required. (included)
Is Discontinued By Manufacturer	No
Manufacturer Part Number	12V 7A
Amperage	7.2 Amps

12V 7Ah (7.2Ah) Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar Powar, Lighting, Power Wheels, Fish Finder and More, Built-in 8A BMS

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