Home PowerTex Batteries 12V 20Ah LiFePO4 Lithium Iron Phosphate Battery

PowerTex Batteries 12V 20Ah LiFePO4 Lithium Iron Phosphate Battery

Sale price $139.99
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  • Voltage - 12.8 V
  • Capacity - 20 Ah
  • Weight - 6.6 lb.
  • Dimensions (LxWxH) - 7.13 × 3.03 × 6.57 in
  • Fully integrated battery management system (BMS).
  • Ideal for solar setups, e-mobility, marine, RV, UPS, telecom, lighting, medical gear, and backup power

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Shipping & Returns

Standard Shipping: Enjoy free standard shipping within the continental USA.

Expedited Shipping: Need your items sooner? Expedited shipping options are available at an additional cost. Select this option at checkout for faster delivery.

Returns: We want you to be completely satisfied with your purchase. If for any reason you are not happy with your battery purchase, we offer hassle-free returns within 30 days of delivery.

Signature Requirement: For security purposes, all orders over $400 will require a signature upon delivery. Please ensure someone is available at the delivery address to sign for your package.

Conditions for Returns:

  • Restocking Fee: Please note that if the battery is returned without any defects and in its new, unused condition, a restocking fee for shipping expenses may apply.
  • Return Shipping: If there is an issue with the battery, we will cover the return shipping costs.
  • Unused Condition: Batteries must be returned in their original, unused condition to qualify for a refund or exchange.

For any further assistance regarding delivery or returns, please don't hesitate to contact our customer service team.
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Most items ship within 24 hours, excluding weekends and major holidays.

Return within 30 days of delivery. Shipping fees are non-refundable.

PowerTex Batteries 12V 20Ah LiFePO4 Lithium Iron Phosphate Battery

PowerTex Batteries 12V 20Ah LiFePO4 Lithium Iron Phosphate Battery

$139.99
Lightweight. Durable. Ready for Anything.

The PowerTex 12V 20Ah LiFePO₄ battery combines portability with long-lasting performance. Designed to deliver dependable power for both recreational and professional uses, it’s compact, safe, and maintenance-free.


Perfect for powering:

  • Portable solar systems and inverters
  • Electric scooters, e-bikes, and mobility devices
  • Marine/RV electronics and fishfinders
  • UPS and backup systems for Wi-Fi, routers, and comms gear
  • Medical devices, portable lighting, and lighting rigs
  • Remote trail cameras and off-grid electronics

Why Choose Lithium Iron Phosphate (LiFePO₄)?

  • Extra-long Life – Over 3,000 cycles at 100% Depth of Discharge, far outlasting lead-acid batteries
  • Featherlight Design – Approximately 40% of the weight of comparable lead-acid models
  • Maintenance-Free – Sealed design, no acid, no leaks, no water top-ups
  • Fast Charging – Charges efficiently up to 0.5C, so you can stay powered up with less downtime
  • Stable Voltage – Reliable power output with minimal voltage sag across the discharge
  • Smart BMS Protection – Integrated safeguards against overcharge, over-discharge, short-circuits, and thermal issues
  • Safe & Eco-Friendly – Non-toxic, non-spillable chemistry with superior thermal and impact resilience

Use it Anywhere Power Is Needed

Whether you're off-grid, on the water, camping, or preparing for emergencies, this battery stands up to tough conditions with worry-free performance and zero maintenance.

Electrical Characteristics

  • Nominal Voltage - 12.8V
  • Nominal Capacity - 20Ah
  • Internal Resistance - ≤ 20mΩ
  • Cycle Life - > 3000 cycles @1C 100%DOD
  • Monthly Self-Discharge Rate - < 3%
  • Charging Efficiency - 100% @ 0.5C
  • Discharge Efficiency - 96 ~ 99% @ 1C

Charging Information

  • Charge Voltage - 14.4 ± 0.1V
  • Recommended Charging Current - 10A
  • Max Charging Current - 18A
  • Charging Cut-Off Voltage - 15.0V ± 0.1V

Discharge Information

  • Continuous Current - 18A
  • Max Pulse Current - 50A (< 3 Sec.)
  • Discharge Cut-Off Voltage - 10V

Environmental Information

  • Charging Temperature - 32F to 113F @ 60 ± 25% Relative Humidity
  • Discharge Temperature - -4F to 140F @ 60 ± 25% Relative Humidity
  • Storage Temperature - 32F to 104F @ 60 ± 25% Relative Humidity
  • Water Resistance - IP65

Mechanical Information

  • Cell & Configuration - Cylindrical & 4S3P
  • Dimensions (LxWxH) - 7.13 × 3.03 × 6.57 inches
  • Weight - 6.6 lbs
  • Terminals - M5 Internal Thread
  • Parallel Config. - 4 Pieces Max
  • Warranty - 2 Years

Customer Reviews

Based on 8 reviews
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H
Harvey Craft
My Thoughts

I do not understand all of the tech involved in these new batterie. I read the booklet that came with it and am still confused.
What kind of charger do i need to maintain it?
Will my computer controlled charger work?

J
Jeff Malvin
Looks promising

Haven’t had a chance to use it yet but it’s all charged up and ready to use on my electric reels for deep drip fishing…

A
Alan Powell
Works Great With Fish Finder

Got this for my Garmin fish finder and it works great. Was able to fish all day without having to recharge.

B
Brady Blackmore
Great product and support

Was not sure which battery to get for my solar powered radio, they were able to help me understand which watt hour option would suit best.

K
Katey Bauer
Replacement

Used on my daughters powerwheel

12
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