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popularLovelyCheetah | Staff posted Aug 11, 2025 11:09 PM
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popularLovelyCheetah | Staff posted Aug 11, 2025 11:09 PM

2-Pack ECO-WORTHY 12V/24V 20A Lithium LifePO4 Smart Battery Charger Maintainer $84.99 + Free Shipping

$85

$125

32% off
eBay
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eco-worthy-us via eBay [ebay.com] has the 2-Pack ECO-WORTHY 12V/24V 20A Lithium LifePO4 Smart Battery Charger 14.6V Maintenance for $84.99 w/ code FIFTEENFORYOU at checkout. Shipping is free.

Product Description:
  • 12V 20A LiFePO4 charger and battery maintainer is designed for 12V(12.8V) lithium batteries, with a constant current of 20A and a constant voltage around 14.6V.
  • Constant voltage of 14.6V, with a maximum current of 20A. it can charge a 12V 100Ah LiFePO4 battery to 50% in 2.5 hours, 2 times faster than an ordinary 10A battery charger.
  • Smart charger provides multiple protections to prevent over voltage, over current, short circuit, and overheat. It has full charged auto stop function and 0V charging mode. When the LiFePO4 battery is being protected by BMS, the charger can reactivate the battery and restore the normal voltage.
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Community Notes
About the Poster
eco-worthy-us via eBay [ebay.com] has the 2-Pack ECO-WORTHY 12V/24V 20A Lithium LifePO4 Smart Battery Charger 14.6V Maintenance for $84.99 w/ code FIFTEENFORYOU at checkout. Shipping is free.

Product Description:
  • 12V 20A LiFePO4 charger and battery maintainer is designed for 12V(12.8V) lithium batteries, with a constant current of 20A and a constant voltage around 14.6V.
  • Constant voltage of 14.6V, with a maximum current of 20A. it can charge a 12V 100Ah LiFePO4 battery to 50% in 2.5 hours, 2 times faster than an ordinary 10A battery charger.
  • Smart charger provides multiple protections to prevent over voltage, over current, short circuit, and overheat. It has full charged auto stop function and 0V charging mode. When the LiFePO4 battery is being protected by BMS, the charger can reactivate the battery and restore the normal voltage.

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Aug 12, 2025 05:24 AM
295 Posts
Joined Oct 2012
AstroballsAug 12, 2025 05:24 AM
295 Posts
Fan of their batteries and ground mount equipment. Super value and still safe to use.
This charger, maybe not so much. Just got my unit this week and it started acting up day 2 of use. Can't get it to stay on and provide current for more than 2s on boot. Customer support has been responsive, so we'll see how we go about a return/exchange.
Otherwise, yeah, good brand.
1
1
Aug 14, 2025 02:51 AM
1,043 Posts
Joined May 2018
Oil_BurnerAug 14, 2025 02:51 AM
1,043 Posts
Do these have DC 14v supply mode? I believe the 5A and 10A chargers have them.
1
Pro
Aug 15, 2025 03:01 AM
615 Posts
Joined Jul 2019
WoodSlayR
Pro
Aug 15, 2025 03:01 AM
615 Posts
40 amps total of charging for 85 bucks is a great deal. And FYI it's perfectly fine to use 2 simultaneously on the same battery or battery bank for 40 amps total.
1
Aug 17, 2025 07:27 AM
198 Posts
Joined Apr 2016
bktj600Aug 17, 2025 07:27 AM
198 Posts
Quote from WoodSlayR :
40 amps total of charging for 85 bucks is a great deal. And FYI it's perfectly fine to use 2 simultaneously on the same battery or battery bank for 40 amps total.
I'd have a hard time seeing how two battery chargers ran in parallel like this would be safe for any automotive style battery. Or any battery as I have never seen anything to suggest or imply that would not result in a fire from an overcharged battery or one charger causing the second to shut off.
1
Pro
Aug 17, 2025 06:53 PM
615 Posts
Joined Jul 2019
WoodSlayR
Pro
Aug 17, 2025 06:53 PM
615 Posts
Quote from bktj600 :
I'd have a hard time seeing how two battery chargers ran in parallel like this would be safe for any automotive style battery. Or any battery as I have never seen anything to suggest or imply that would not result in a fire from an overcharged battery or one charger causing the second to shut off.
No. current wouldn't ever be forced into a charger. Thats not how current works. The only thing that dictates the flow of the current is the resistance of the battery or the device thats using electricity. The current from both chargers would flow to the battery or any device that has low resistance until the battery's resistance reaches a certain point, thus letting the chargers know the battery is full. Then they stop charging. There's nothing wrong with using 2,3, 4 or even more chargers on a single battery, even if the chargers charge at different amperages. The voltage needs to be the same or at least very close to the same, but other than that, using multiple chargers on the same battery is completely fine.
Last edited by WoodSlayR August 17, 2025 at 12:49 PM.
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