21v lithium battery 4.0AH

I received the SHINTYOOL 21v Lithium Battery with Charger Adapter (4.0 Ah), and I am genuinely impressed. I took a chance hoping this would be a compatible solution for my slightly older, off-brand 21v cordless leaf blower—and it was a perfect fit! Finding reliable battery replacements for generic or lesser-known tool brands can be a nightmare, but this SHINTYOOL battery snapped into place smoothly, instantly reviving my leaf blower. The 4.0 Ah capacity is a significant upgrade over my original battery, providing a noticeable increase in run time. I was able to clear my entire yard without needing a recharge, which was never possible before. The accompanying charger works quickly and efficiently, and the built-in LED indicator on the battery itself is incredibly useful for quickly gauging the remaining charge without having to plug it into the tool or charger. This battery delivers consistent, strong performance and proves you don't always need to buy the expensive OEM part for quality power. If you have an off-brand 21v tool, give this battery a try—it's a high-quality, high-capacity solution. Pros: Perfect fit and compatibility with generic 21v tools. 4.0 Ah capacity delivers excellent, long-lasting run time. Reliable and fast charging. Clear LED indicator for checking battery life.

A perfect and cost effective battery replacement for my Black & Decker hedge trimmer. Fit perfectly, charged quickly and had a solid 45 minutes usage time.

This 21v lithium battery works perfectly and provides strong, consistent power. The 4.0Ah capacity gives a long runtime, which is great for extended use with my tools. It charges quickly and holds the charge well without draining fast. The build quality feels solid and durable. A great replacement or backup battery that delivers excellent performance at a good price. Highly recommended.

It seems strong. Have only used once and worked well. Little expensive.

The seller wants a review. I haven’t used it yet so I don’t know how long it will last on a charge. It doesn’t have the bar to show where the charge is like my original ones do. No battery indicator that I can see. This is bigger so hoping it will last longer. The important thing is that it fit in the item I bought it for.

I’ve had one for about two years now. Still holds a good charge. Use it often.

Worse the 1 star. I used the battery once in December. Pulled it back out to use for yard stuff. Doesn't hold a charge, cant even get it to charge. The plug is green but I put it in my machine and there's nothing

Works perfectly. Very powerful.

Funciona bien, no la he ocupado mucho

Works better than the origional

Bought this as an additional battery for the IBELOMR Leaf Blower I bought a couple of years ago. It fits and works well. Does my whole yard easily on one charge so battery life looks good.

works well, inexpensive Chinese option

The worst battery ever purchased. Does not hold charge. less than 10 minutes. Lost money.