Tenergy AA 1.2V NiMH 2000mAh Flat Top Rechargeable AA Batteries with Tabs, 10 Pack

The batteries died in my 5 foot rechargeable worklight quite a long time ago and I decided to finally rebuild the battery pack in it. Soldered these up and heatshrunk the long 8-battery single length pack together, it snapped right in to the existing clips and turned on just fine. Charging seems to work just fine with the oem charger, of course it takes a bit longer since these are 2000mah batteries and not 1200mah like the oem ones were, but I get about 5 hours run time on high now, where it used to be only about 2 or 3 hours max when this lamp was new (about 15 years ago). Not the greatest lamp as there are way brighter units sold today, but for a few bucks worth of batteries, I'll continue using it until it doesn't work any more! And maybe I'll modify it for new led light strips inside when it does die!!!!

Replaced the batteries in an older hand vacuum. These were rated at a higher MAH rating than what I took out but were the correct size with similar tabs. Note if you are not careful, the tabs can break off, but the tops and bottoms of the batteries can be soldered to. After re-assembly of the vacuum, it was an amazing transformation. It now runs much longer and stronger, though it does take a bit longer to recharge the vacuum primarily because the larger capacity batteries take longer to fill. I am very happy with these, now to see if they last.

Had three Stanley stick LED flashlights that no longer held a charge for longer than five minutes. Was able to install these in all three using only a soldering gun and electrical tape. All three seem better than new as will stay lit on high for over an hour and a half. Much cheaper than the lights originally cost.

It took me 4 hours for replacing cheap original(made in china) electrolux NiMH 1300mAH battery to Tenergy NiMH 2000mAh battery. It wasn't an easy job but definitely a worthwhile. You'll thank that flat top tab is the best way to replace them because soldering them is kinda difficult. Make sure to have soldering flux to prime the surface before soldering otherwise it will not stay soldered. I've read other articles about Eneloop batteries not charging. This is not a problem for me. It charges just fine. I think their problem came from soldering. Anyways, I'm very happy with the result. It sucks air louder and stronger than before.

Edit: 18-months since the install, and while these still work, they've probably lost 50% of their capacity in a device that gets moderate use. While not necessarily a deal-breaker, lifespan is somewhat less than impressive. Original review: Used these to replace the ten dying 1,200mAh batteries in a big brand portable vacuum cleaner. The install would have been a little easier if the tabs were tacked on in opposite directions and if the tab holes were a little larger, but not big issues. These batteries were also very slightly larger than the batteries I removed, which made for a tight installation. But this isn't a problem with these batteries. Rather, the device had been designed around some slightly undersized (and low capacity) batteries. Getting these in place consequently required a little internal plastic trimming with an Exacto. The result, however, is that the vacuum now runs better (and perhaps a little warmer) than new. At any rate, I'm happy with these. And the new batteries cost far, far less than the a new vacuum. Just a note for anyone who doesn't realize, these aren't drop-in batteries. Installing them will require soldering, heat shrink insulation, and at least a basic understanding of electricity.

It is not working and they will not return your money after return

These 2000mAh batteries were an excellent choice to replace the handheld vacuum's old 1200mAh originals. The power is restored better then when it was new (2) years ago. I hope these will perform just as well. [edit] Sept 29, 2015 The batteries have 'failed' me about 6mths ago and will not keep enough power the cordless vacuum cleaner. I have yet to test individual batteries from the pack to determine rate of failure. I will also assume the charging function is 'working'. I will update post if I discover differently. Lesson learned: spend more on better quality batteries. I'm reducing my review from 5 stars to 3 stars.

Producto OK