energup 2Pack 6.5Ah WA3575 Replacement for Worx 20V Battery 20 Volt Lithium for WA3520 WA3525 WG151s, WG155s, WG251s WG255s WG540s WG545s WG890 WG891 for 20V Worx Lithium Batteries

It’s a very good battery and it’s very cheap cheaper compared to original. I am 100% recommended to use the cell is very good. It keeps the charge for very long time and charge and fit very good. You will get the better value for money compared to other brands, battery life and performance is the best and the best quality! It’s a good powerful performance battery I like the power.

The battery lasted a long time I did not think it would work that long but it did marvelous

I'd purchased this brand in the past, so I knew that these were a good bet, and thankfully it seems I was right in trusting them a second time. The batteries fit perfectly & powered up with no issues in the charger that came with my mower, and have so far provided as much or more mowing time than the originals, though to be fair I did purchase 6.5 amp in these, whereas the originals are only 5 amp. But even if they had only provided equal or slightly less mow time, it would have been worth the buy since they are about half the price of buying extra batteries from worx (no disrespect to worx - I love their products - but I just can't afford the "throw away" $60). May even purchase another pair to handle those times when the lawn gets extra long and really challenges the batteries...

Bought this to replace aging original Worx batteries, so far so good, plenty of use time, well-constructed, no problems to report.

I have been using this set of batteries (6.5 amp) for about two months to run a 40V 20" lawn mower. These batteries last 10 minutes less than my original Worx 4 amp batteries.

So far I used one of the pack and it lasted far longer then the 2.0AH pack. I think I used it for a hour roughly with my WX170 and the battery was tight fitting on and had to use rubber hammer butte to knock it out. Not sure if this is because of the rails or something else but another 2.0AH that I used fitted the WG550 without issue? Beyond that that charge seems to last and I will use it later coming weeks to verify that this battery will hold out for longer usage.

Used the batteries for just two cycles. One of the batteries is showing a red indicator in the charger. Batteries are also smaller than the 4amp ones that came with the Worx tools. For 6.5 amp capacity they last less time than expected, actually less than the original 4amp ones.

excellent pricing great product great replacement for original battery