20-Amp Car Battery Charger, 12V/24V Lithium, LiFePO4, Lead Acid (AGM/Gel/SLA), Smart Battery Maintainer, Trickle & Pulse Repair, Portable Charging for Cars, Boats, Motorcycles, Golf Carts, Tractors
Condition: New
Checking for product changes
Buy Now, Pay Later
As low as
$8.38
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Wednesday, Jun 11
Recently Viewed
Model: EF-20
Features
- Smart Charging with One-Button Start & 20A Max Current20Amp Car Battery Charger offers one-button start functionality for ultimate convenience. With a maximum charging current of 20A, it delivers fast charging for a variety of battery types, ensuring your vehicle or equipment is ready in no time. Compact & portable design makes it easy to carry and store, perfect for home garages, boats, and traveling.
- 3-Level Adjustable Charging Currents for Optimal PerformanceChoose from three adjustable charging currents for 12V (5A, 10A, 20A) and 24V (3A, 5A, 10A). Select the best option based on your batterys needs and enjoy efficient, safe charging. Whether youre charging Lithium batteries, Lead Acid, or LiFePO4, this charger optimizes power delivery for a longer battery life.
- Wide Compatibility: Supports All Popular Battery TypesThis battery charger works with a wide range of batteries, including Lithium, LiFePO4, Lead Acid (AGM, Gel, SLA), and more. Perfect for a variety of vehicles and equipment like cars, motorcycles, boats, electric golf carts, tractors, lawn mowers, and forklifts. Versatile charging ensures youre always prepared for any situation.
- Built-In Temperature & Multiple Protection Features for SafetyThis smart battery charger comes with an integrated temperature sensor, working in -10C (14F) to 40C (104F) conditions. Equipped with overvoltage, overcurrent, short circuit, low voltage, and electrostatic protection, it ensures safe, worry-free charging every time.
Brand: Haisito
Color: P20-Black
Product Dimensions: 7.64"D x 2.68"W x 6.72"H
Item Weight: 1.23 Pounds
Output Voltage: 24 Volts (AC)
Product Dimensions: 7.64 x 2.68 x 6.72 inches
Item Weight: 1.23 pounds
Item model number: EF-20
Date First Available: June 9, 2021
Manufacturer: Haisito
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Model: EF-20
As you know your old charger won't work on the new Lithium tech battery. Recently I got one..and a super simple charger came with it! That charger worked...but it had no readout at all. So, I wanted something finer and after much lookings I chose 20-Amp Car Battery Charger. I have used another brand exclusively for years.... But that one came with bugs. My new 20-Amp Car Battery Charger, so far, has been flawless. Gives good charging info and works QUICK! Also it has some kind of battery rejuv function. Well, I have a truck battery to go to 0 on me. And it wouldn't fully charge. I ran the restore thingy on my new 20-Amp Car Battery Charger on the thing and wah-lah, the old battery is back 100% again. That alone may have saved me a hundred bucks. This is a good charger! Works with all batteries!
...
show more
Reviewed in the United States on March 30, 2025 by Norman Morrison
Model: EF-20
wow! I am impressed, this little charger worked fantastic. Did everything I expected and did it well. Great product
Reviewed in the United States on May 20, 2025 by buy or not?
Model: EF-20
Works great works on any tipe of battery very long cords
Reviewed in the United States on April 28, 2025 by garryl
Model: EF-20
My new favorite charger. I was skeptical that something so small could push 20 amps, but according to the built in display it regularly hits 16A+. The fan moves a lot of air, but I don't think it's unreasonable for such a small package. I can feel it moving a good bit of heat and it turns off when it's not attached to anything. Main thing I'm happy about is it doesn't do a mandatory 10 minute desulfation/testing cycle at the beginning of every charge like one of my 10A chargers does. Sometimes it doesn't matter but sometimes I want to start charging immediately - I frequently use this to keep a car battery from dying when I need to have key on engine off for an extended period. I appreciate having some control over the charge, something omitted from a lot of "smart" chargers these days. I can also select 5A, 10A, or 20A for 12v batteries which is nice. This is exactly what I was looking for. The only con I can think of is that the charge percentage seems to mean nothing and it usually just flashes 80% or 100% regardless unless a battery is completely dead. I can get a good enough idea by the charge voltage and current so I don't mind that much. Update: I see it sometimes pushing 20A, then back down to about 15-16A when the battery is nowhere near fully charged (and can take 40A+ as verified with another charger). I suspect it's throttling itself when it gets a little too warm and could just use a bigger fan but I haven't spent too much time investigating it. I may try giving it some more air to see if it'll maintain a higher current. Also have been testing the repair feature on a couple batteries with issues and have seen good results. It probably can't bring back a trashed battery, but it does seem to help a weak one. I first tried this feature on a Noco charger and didn't notice much difference, but I think that's because the Nocos will turn it off after ~4-5 hours (which isn't the worst idea especially for routine-ish maintenance), while this one will run until you stop it or it thinks the battery is fixed. How does it decide that? No idea, but it's only stopped itself on one battery that I've used it on so far. I let it repair one for ~9 hours a day for a week straight (under supervision!) and saw improvement from ~300CCA to ~550CCA and holding higher voltage at rest. Last thing. I noticed some reviewers mentioned the cables pulling out of the plug at the charger and exposing bare wires, and yes the first one I bought is developing this issue. I'm watching it closely and will be making a repair or retiring it when it starts to get questionable. I've since bought two more of these and noticed the plug has been updated to prevent this from happening. Also my newer ones modulate the fan speed according to charge current (and temperature I assume), so it seems like they've been upgraded all around. Update again: Changing my rating because after buying a 4th one (yeah I know) this version seems to have gone back a step. Will not attempt to charge batteries below ~7.5v, just sounds of relays clicking (which old ones didn't have) then shuts off and says it's full. I originally said the new version doesn't float and that seems to not be entirely accurate, but it is different than before. I'll be doing some testing on that...
...
show more
Reviewed in the United States on September 22, 2023 by duke
Model: EF-20
The media could not be loaded. Great little charger with a cooling fan! It ran at 17 + amps for my new 300ah lithium batteries. Took approx 9 hrs each from 40% full.
Reviewed in the United States on May 9, 2025 by J. ANDERSON J. ANDERSON
Model: EF-20
The media could not be loaded. Update July 24 2024: Today I decided to charge a battery that discharged because I didn't drive the car for a week. I use the 100AH Lithium Ion Phosphate battery in my car to run a 12V refrigerator and noticed that during charging I had a very hard time opening my car doors. My car (2018 Honda Accord) has a key fob that stays in your pocket and you walk up and just pull on the handle and the door opens. Well, this doesn't work when I was charging. I had to unplug the charger from electrical outlet to open the doors. It appears that this charger causes radio interference with car key fobs and I also found out today that my remote thermometer that hangs on the tree outside would not update unit in the home during charging. So this charger is not well designed and causes radio interference. This is the first time I experienced this with a charger. Update Jan 16 2024: I did some more testing. The battery I use is exactly 230 AH (2.944 KWH) in capacity. Using this changer on the 20 amp setting (in reality almost 15 amp) I charged the battery to full. I ran a 10 amp load with a electronic load test device to drain the battery until the BMS (battery management system) cuts off the connection to prevent damage. Result was 230 AH as rated by manufacturer. I used the charger again and charged the battery to full after draining it and getting 230 AH (2.944 KWH) capacity. I measured how much electricity from my 120V AC wall outlet it takes to charge the battery back to 230AH (2.944KWH) and i was shocked. It took just over 17 hours and 3.901 KWH to get the battery recharged. So this charger wastes 25% of AC wall electricity to recharge batteries. I honestly don't know if that is normal or not but one thing for sure is that the fan blows out a lot of wasted heat during charging. I assume there is some loss in conversion but that seems a bit high. I am not 100% sure. I have to lower the rating to 1 star due to not charging at 20 amps and not appearing to be efficient and loud. See my video. Original review Jan 7 2024: This charger falls short on the max amp charge rating. For me charging my 230Ah LiFePO4 battery the 3 charge settings gave me approximately 5.2 amps, 9.6 amps and 14.7 amps. I only got close to 20 amps in the first few minutes of the charge. During the main charge phase it only hovered in the 15 amp range My battery has a recommended charge of 40 amps but charging LiFePO4 batteries at a slower rate will extend their life so that's why I bought the charger. I wanted to use 20 amps. I have not decided if I will keep it.
...
show more
Reviewed in the United States on January 7, 2024 by Paul
Model: P30
Great versatile battery charger - gets a full charge on my lithium iron battery i use for my trolling motor.
Reviewed in the United States on March 21, 2025 by PN