Tenergy D Size 5000mAh NiCd Button Top Rechargeable Batteries - 16 Pack

Over the years nicad batteries have received a bad reputation. I have found them to be very reliable and tougher than nails if cared for properly. They like to be cycled. Charged to full capacity and discharged completely, then charged to full capacity again. You can turn on and off whatever device they are powering as many times as you like, but just make sure they are mostly discharged before charging them again. Nicads do not do well with being topped off. Cycle them completely and they will serve you well. I have also found that they perform better over time if stored in a slightly discharged state. They can withstand high drain rates, high heat, quick charging and overcharging better than any other battery chemistry I have dealt with. If heavy use is your game, these batteries will claim their fame. I use these in lights, lanterns and boomboxes. They never let me down. Not even in the heat of the summer desert. I recently found a set of 4 aa nicads that had been sitting in the back of my toolbox for three or so years. I charged them up and put them back into service and they have been performing perfectly for almost two years. I highly recommend, especially for extreme use. Update: I have had one cell / battery fail completely. Will not take even a slight charge from my manual charger. Other people have had the same problem. I am going to attempt to contact the company / supplier directly as others have. So far, they have been good about replacing any defective cells for those who contacted them. Will see what the outcome is and post another update when I can.

Remarkably consistent product. Testing all 8 batteries out of the package, they were all at 1.31 vdc. After one discharge/charge cycle with my EBL #906 charger, they read 1.37 to 1.39 vdc. That's a range of 1/50th of a volt. NiCad batteries are perfect for constant rotation duty. I'll be using them in a CCrane Ep Pro am/fm radio. Two sets of four for 'leap frog' use. One set on standby, the other in use.

I wish they had a longer life as far as recharging goes for use them for portable hot fences it'll last two or three days but then head falls off fairly quick after that every time it's charged it gets less and less. If there's a better battery type out there I would like to know about it.

I love that these came already charged. They work great.

I've had these fully charged in some of my vintage Boombox Radios for some months now & haven't needed to recharge them so far.

I bought 8 of these to try out and they seem to work good out of the package. I only used one with others for use. After use I tried to charge and no go. All of the others worked but this one will not charge. It just gives an error. So I never did get one charge after using it. I will try contacting the company to see if they can send a new one out to me, but I have not had an luck contacting these companies and having them respond or back up their batteries. I will update later if they do... Update - The company has contacted me and has sent me a new battery for the one that went bad. The customer service was good and prompt. I am changing my review to reflect this. I will update again if all is well and no more issues.

I purchased these batteries for my emergency lights. They charge quickly seem to last for a long time when in use and can be recharged over and over.

First, I bought 8 (also tenergy brand, centuras) NiMH LSD d cells for flashlights. Then realized they weighed 3lbs, and while they seem to give their advertised 8000mah, boy they're a lot to swing around. So I also got some of these tenergy NiCD d cells, and they're much lighter, a little over half the weight, and seem to be the advertised 5000mah (+/-100 or so). My love for the NiCD chemistry is that they're very forgiving of abuse, and don't sag under load. So when I run them in an incandescent flashlight, it stays nice and white for most of the battery life. And when I forget the same light on and drain them to 0v, when I charge them in the morning they'll come back. Side note, this happened once and one was forced into reverse polarity- the bottom swelled and the polarity stayed reversed... For about a day. The case is still bulged on the bottom, but it recovered after a day of rest and is back to its 5 amp hour self. So that's cool. Nickel cadmium batteries are essentially a solved problem, and they work reliably. Unbiased review from a fan of flashlights and batteries.

cumple

Perfect

Hasta el momento cumpliendo con las espectativas de reemplazo a las baterías Sanyo KR-4400D

Got them half a year ago, charged them twice, worked ok, then they show as fully charged but they don't work at all. Got even a different charger, thought the problem was the charger, and they all show as errors now. What a waste of money!

There batteries, they do the job