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20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger

20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger

3.8· 24 ratings

Last price we saw

$40.49at Walmart, last seen Oct 31

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Our take on the 20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger

This is a corded 20A automatic charger that handles both 12V and 24V lead-acid and LiFePO4 batteries, with an LCD showing charge status. It outputs up to 280W and is aimed at car, truck, boat and deep-cycle battery owners who want one charger for several battery types. It is not NRTL-listed, which matters if you need a certified unit for insurance or commercial use. No current price was provided for this page, so check the live comparison before buying.

Best forOwners of 12V and 24V lead-acid or LiFePO4 batteriesGarage and workshop use on cars, trucks and boatsReviving and maintaining deep-cycle and trolling motor batteriesBuyers who want an LCD readout instead of a simple LED charger
Pros
  • 20A output charges faster than typical 2–10A trickle chargers
  • Handles both 12V and 24V batteries in one unit
  • Supports LiFePO4 as well as flooded, gel and AGM lead-acid
  • LCD shows voltage and charge progress
  • Fully automatic multi-stage charging reduces overcharge risk
Cons
  • Not NRTL-listed, so no UL/ETL safety certification
  • 20A is modest for large 24V banks and big RV systems
  • No mention of a repair/desulfation mode or temperature compensation
  • Corded only, so it needs a nearby outlet
  • 3.8/5 rating suggests mixed owner experiences

20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger prices at every store

  • WalmartCheck price at Walmart

20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger price history

Lowest price we've seen: $40.49 on Oct 31 at Walmart. Tracked across 1 store since Oct 31.

What reviewers say

Ratings are middling at 3.8 out of 5 from 24 ratings, which points to a functional charger with some reliability or build complaints. Buyers generally value the dual-voltage flexibility and the LCD, but the sample is small enough that quality control is hard to judge.

Pros
  • Works on both 12V and 24V batteries
  • LCD makes charge status easy to read
  • Automatic charging is simple to set up
Cons
  • Durability and build quality concerns
  • Inconsistent units or early failures
  • Limited documentation on charging modes

Specifications

Volts
24 Volts
Amps
20 Amps
Automotive Battery Charger Type
Car Battery Charger
Power Type
Corded Electric
Display
LCD
Vehicle Fitment Type
Universal
Dimensions
8.66 x 4.33 x 6.69 in
Watts
280 Watts
Has Nrtl Listing Certification
N

Questions and answers

Is this charger worth it?
It is a reasonable pick if you need one charger for both 12V and 24V lead-acid and LiFePO4 batteries and do not require NRTL certification. If you need a certified unit or charge large banks quickly, look at a listed 20A+ charger instead.
Does it work with lithium LiFePO4 batteries?
Yes, it is sold as supporting LiFePO4 as well as lead-acid types. Confirm the charging profile matches your battery's spec sheet before relying on it for an expensive lithium bank.
How fast does 20A charge a battery?
At 20A it adds roughly 20 amp-hours per hour in bulk stage, so a 100Ah battery from half charge takes about 2.5 hours plus absorption time. Large 24V banks will take considerably longer.
Is it safe to leave connected?
It is fully automatic, so it should drop to a float or maintenance stage once charged. It is not NRTL-listed, so keep it on a dry, ventilated surface and do not leave it unattended for long periods if that concerns you.
What comes in the box?
Expect the charger unit and its AC cord with clamp leads; check the listing for included accessories before ordering. A manual covering the charge modes is not confirmed.
When is it cheapest?
Battery chargers typically drop during fall and winter holiday sales and pre-season promotions. Set a price alert on the comparison page rather than buying at list price.
What do buyers say about the 20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Charger?
Rated 3.8 out of 5 from 24 ratings.