








🔋 Power up your productivity — don’t let your tools run out before you do!
The LiTHELi 20V 4.0AH Lithium Ion Battery Pack offers a robust 20-volt output with a 4.0 amp-hour capacity, designed exclusively for LiTHELi 20V power tools. Featuring EV-grade cells that perform reliably in temperatures as low as -20℃, it includes a four-LED battery life indicator and a low self-discharge design to maintain charge during storage. Lightweight and rechargeable, this battery is backed by a 2-year manufacturer warranty, making it an essential backup for professionals and DIY enthusiasts alike.












| ASIN | B08QRY7MM2 |
| Amperage | 4 Amps |
| Antenna Location | Power Tool |
| Battery Capacity | 4 Amp Hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 690 Grams |
| Best Sellers Rank | #52,004 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #490 in Cordless Tool Battery Packs |
| Brand | LiTHELi |
| Customer Reviews | 4.5 4.5 out of 5 stars (568) |
| Item Dimensions | 4.92 x 3.35 x 3.35 inches |
| Item Weight | 0.9 Pounds |
| Manufacturer | Litheli |
| Model Number | E1-20BY2SJ |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| UPC | 740907583656 |
| Unit Count | 1.0 Count |
| Voltage | 20 Volts (DC) |
| Warranty Description | 2 Year Manufacturer |
S**L
Ease of use and last
These are good batteries. One came with my electric mower and I've had it awhile now. The battery is still good but I wanted an extra one in case I needed it. I have 2 small areas where I mow and they hold up to cut theses areas at least 2 times.
D**S
Works As Expected and Good to Have a Backup
Works As Expected and Good to Have a Backup; what else can I say?
J**R
Good product
Works great
D**R
No regrets. We purchased a second set of batteries…
Keep batteries indoors out of the cold to extend life.
V**V
Keep battery out of elements when not in use.
The battery will last longer if you keep in the garage. We kept our first battery in the shed and it got too cold and hot. Did not last long. New battery is doing great and mows complete lawn in 1 charge. Easy to use and excellent quality. Thank you.
S**A
Works great
Took a little longer then expected to receive, but works great! The size was as described and it's very well made and easy to use. The power of battery is perfect for my little mower. The value was so so I think it was priced a little step but the quality defines the price.
H**H
Positive Update on Dead Battery Received
Update 6-13-25: I charged the battery again, re-inserted it into the mower and it started working. Have now used it twice without issues. The company offered to refund my purchase even though I was beyond the return window. So, all is fine and I now recommend this battery and the seller. Charged the battery when received and tried to use it. Would not work in mower. Charged it again and tried it again. Still won't work. Battery is obviously defective. Return window has passed so I've lost $60 on this expensive door stop. Do not recommend buying this!
T**C
Good!
Works great as a 2nd set for my Litheli snowblower. One set of these batteries just doesn't cut it for deep snow.
N**E
I’m 73 years old.I live by myself in my home.We have had about a foot of snow in the last three days. My Litheli 4.0 wouldn’t chsrge and kept flashing red. I needed a new battery.I ordered one from Amazon where my son bought the shovel two years ago. When I read up on the battery I found out that the warranty on battery was three years.😁 I called Amazon and they refunded the money for the battery.Im going to order a second battery and I’ll always have a spare. It starts like a charm.I leave the shovel in my yard to make a path for my Yorkie.Perfect tool if your yard isn’t too big or snow isn’t more than a foot.🇨🇦Very light.
M**Y
Honoured their commitment to replace original Now satisfied I find Litheli products to be very reliable Original-Recharger didn’t last a year extremely disappointed
H**3
Not had any problems - I do leave it for a short period on the charger once it is showing full and it seems to hold charge well. Definitely need two as it seems to go from operating to dead like someone threw a switch. Overall I still do prefer gas operated garden machines as you get more power and last longer - trying to be enviro friendly - and still worry about lithium batteries. But overall this does cope as expected.
A**R
Ordered extra battery for my lawn mower 13 inch green and black mower. Have no problems it works as good as the battery thats included. I need it because I have a huge pie shaped lot and waiting for my battery to charge is a pain!
B**D
what I needed
Trustpilot
1 week ago
2 months ago