TenHutt 【Lithium-ion 6.0Ah! | NOT Ni-Mh】 2Packs 18V Replace Battery for Black and Decker 18V Battery 6.0Ah HPB18 HPB18-OPE 244760-00 A1718 FS18FL FSB18 Firestorm Cordless Power Tools Lithium Battery

Both batteries on my black and decker string trimmer crapped out. These were relatively inexpensive and are working well. They seem to have more power and to last longer than the OEM. I use this little trimer around the porch and sidewalk where my big gas trimmer is too much trouble to drag out. Be sure and buy a charger. These would not charge on the OEM charger that came with my trimmer. Don't know if anything about their long term durability but they are working fine for me so far.

After ONE week of usage they appear to be top tier battery. They charged to 20.5 as limited by the B&D charger. Did their job well in the weed whacker that normally puts requires a strong battery. The first thing I noted what these were the first aftermarket battery that locked just like an original battery.

Hard to find batteries because they're moving away from these kind of things to other types. Amazon made it extremely easy to find the charge speed is a little slow but they work well. I'm sure they're extremely durable because there's so solid.

Bought these for our Black and Decker Firestorm tools. Worked so great that we bought 2 more. They significantly outlast the old batteries.

It was time to replace the old batteries. As they were not holding a charge, I was super surprised at the quality and performance of these replacement batteries. Looking for replacements, these are your answer.

It works with old charger. Lasts much longer.

The worked well but pooped out earley.

Works as advertised. Happy purchase.