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Izzy138 | Staff 2.1K Views
May 18, 2026 5:11 PM

4 Pack ECO-WORTHY 12V 20Ah LiFePO4 Lithium Battery $176 + Free Shipping

$176

$220

20% off
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ECO-WORTHY US via ebay [ebay.com] has ECO-WORTHY 12V 20Ah LiFePO4 Battery w/ 4000+ Cycles + Built-in BMS for $219.99 - 20% off w/ codeLONGWEEKEND at checkout = $175.99. Shipping is free.

About this product:
  • 4000+ Recharge Cycles: Lasts 8x longer than traditional lead-acid batteries (only 300-400 cycles)
  • Only 4.85 lbs – Ultra lightweight and portable, easy to carry and install anywhere
  • Built-in BMS: Smart protection from overcharge, over-discharge, short circuit. And keep balance between battery cells
  • Multiple Uses: Perfect for trolling motors, mobility scooters, e-scooters, kids' ride-on cars, ham radio
  • Expandable: Supports up to 4 batteries in series and unlimited parallel connections
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Deal Details
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About the Poster
ECO-WORTHY US via ebay [ebay.com] has ECO-WORTHY 12V 20Ah LiFePO4 Battery w/ 4000+ Cycles + Built-in BMS for $219.99 - 20% off w/ codeLONGWEEKEND at checkout = $175.99. Shipping is free.

About this product:
  • 4000+ Recharge Cycles: Lasts 8x longer than traditional lead-acid batteries (only 300-400 cycles)
  • Only 4.85 lbs – Ultra lightweight and portable, easy to carry and install anywhere
  • Built-in BMS: Smart protection from overcharge, over-discharge, short circuit. And keep balance between battery cells
  • Multiple Uses: Perfect for trolling motors, mobility scooters, e-scooters, kids' ride-on cars, ham radio
  • Expandable: Supports up to 4 batteries in series and unlimited parallel connections

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1 Comment

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May 22, 2026 5:37 PM
116 Comments
Joined Mar 2018
jasonw2714May 22, 2026 5:37 PM
116 Comments
Four of these connected together should allow for a discharge rate around 900w. This would be perfect for a DIY ups. If you gut a 900va-1000va UPS and connect these up (make sure you know what voltage the UPS is running beforehand 12v or 24v) and build your own enclosure, you'd be good to go.
The charger on the UPS won't get it up to 100% voltage, so you wouldn't get the full 1024wh.

This is for all the people asking about using LiFePO4 as a UPS. The most important thing that you need to consider is the discharge rate of the battery matching the discharge rate of the UPS.

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