After using new eneloops until they are drained, should they be charged, discharged/charged or refreshed? What about subsequent recharging? Thanks.
1579381
They should be recharged. These batteries may be recharged many times if they are used properly and not left on until they are completely dead.
1579382
These batteries can be recharged repeatedly whether they are partially or completely discharged. Perhaps when they have been used repeatedly over a long period of time, it would then be useful to give them a complete discharge and refresh.
1579383
after drained, you should charge again, and if you drain to a half capacity, you don't need to wait for full draine (discharge) to recharge again, it doesn't have memory effect, so always u can recharge the batteries without worries about how much drained has been.
1579384
I usually keep them in a box and charge them up at the same time and every year at the start on hurricane season I recharge all of the batteries
2190138
I've left eneloop batteries in there for weeks and it doesn't seem to cause any problems. It's probably true for other batteries as well.
1810814
I have been using this charger on Eneloop batteries for the past year. I have stopped using the Eneloops on critical items because they have a low charge protect circuit built in each battery. They shut down abruptly with little warning instead of getting gradually weaker as they discharge. I still use them for music players and game toys.The MH-C800S charger works as advertised and I really appreciate it giving a charge status on each battery.
578846
We're going on four months so far and no issues. We are using Eneloop rechargeables and use it appr. Twice daily for 30 minutes to 3 hours.
2175628
Tricky question to answer but short answer is No, these are high quality batteries that basically do everything they say. And there is no memory effect and no need to fully discharge in order to achieve optimal capacity. I tested these batteries new and they got over their rated capacity. That being said, all batteries degrade over time and use, so fully discharging and then charging will help them come closer to their full capacity. However, if a low quality charger is used such as a "fast charger", then the batteries have been baked by the cheap charger and their capacity has been permanently reduced, no matter if you fully discharge and recharge or not. You will get long lasting results from using a charger like the LaCross BC-1000 or Powerx MH-C9000. Both of these chargers are excellent and work quite well. I've seen other cheap batteries only deliver 50% or less of their capacity, but they were also fried by a cheap charger. It sounds like your batteries have been somewhat fried by a fast charger. You might be able to restore them somewhat by performing the full discharge and recharge that you mentioned, but I've only seen capacity increases of about 15% with this procedure, so it's not a perfect cure. One other thing to consider, if you are using these batteries in a heavy drainage application that is pulling a lot of current and using the battery up quickly, then all batteries will under perform in this situation and will not deliver their full rated capacity. If a 2400 mAh battery was drained fast at 2400 ma, it would not last for 1 hour. You might get 40 minutes or less. But if you drained 100 ma slowly from it, it would easily last for about 24 hours.
507325
Thanks for the lowdown. I didn't spend much money for the Eneloops, so as long as the work better than the Panasonic stock batteries, i'm happy for now. I will look into the batteries you mentioned though if I need to.
1124262
Sorry for the first "short" answer. These batteries are so crappy that the best charger in the world won't do better to make up for their less than advertised capacity (in my experience) and poor performance in a small digital camera. If your going to spend more money get eneloops.
2144599
I use eneloop rechargeable batteries and recharge them in their own charger.
995212
I don't think so. All I know is that it takes maybe 3 - 6 hours to do a full charge. I've been using Eneloop batteries for over a year now and haven't noticed any difference in their charge life from then to now.
1710967
Normally it is best to recharge when it is needed which means let it run down as ea h "cycle " is normally counted as a discharge/recharge...but not sure. Hopefully factory answers
1206124
While technically any battery could leak I have never had this happen to these high quality "eneloop" batteries. Keep in mind it is not so much the battery being left in the device as it is where the device itself is left dormant. If there are frequent temperature and humidity changes the device terminals are likely to corrode which could then damage the battery. As with even mechanical devices (such as springs) it is cycling count that eventually takes its toll. There is a lot of technical data available on long term storage and recharging. From what I know you want to allow them to store partially drained, but NOT "dead" as you can get polarity reversals. Also, it is worth the investment on a "smart charger" that will not overheat the battery and will automatically put the battery through beneficial "cycles" to improve performance and life. Also, it is worth monitoring voltages on all your good batteries... remember the pack is degraded by the weakest battery. In summary, store cool partially drained, smart-charge and never let them overheat.
1048556
AA Rechargeable Energizer, popped right in, and is charging now. The old Eneloop lasted though, for over 5 years. I just replaced it today. I can't remember when I even bought it, or where for that matter.
1071931
I have to comment on the "duds." I bought eneloops from amazon and thought that I got duds. The things sucked. They lasted for 3 days and had to be recharged. This is because you have to "break in" new rechargeable batteries, I found out. The batteries need to be drained and recharged several times before they will reach maximum capacity. So before you return any batteries for being duds or knockoffs, make sure to "refresh" them using an appropriate charger. Otherwise just prepare to charge them fairly frequently at first until they hit their max capacity.
163127
High Flyer,I looked up the user manual for EV2653 cordless phone system. The manual says to charge the included 600mAh AAA cells for 12 hours prior to first use, but subsequent maintenance charge only takes 8 hours. Base on this info, I can safely conclude that it is a dumb charger with a constant current of 75mA.You should be able to use the eneloop 800mAh AAA cells in the handset just fine. However, since the handset is being charged daily, you don't really need low-self-discharge cells in it. Ordinary 1000mAh NiMH cells may actually do better since they can provide longer talk time for the women in the house... No wait, just stick to the eneloop cells in that case. High Flyer,I looked up the user manual for EV2653 cordless phone system. The manual says to charge the included 600mAh AAA cells for 12 hours prior to first use, but subsequent maintenance charge only takes 8 hours. Base on this info, I can safely conclude that it is a dumb charger with a constant current of 75mA.You should be able to use the eneloop 800mAh AAA cells in the handset just fine. However, since the handset is being charged daily, you don't really need low-self-discharge cells in it. Ordinary 1000mAh NiMH cells may actually do better since they can provide... » Read More High Flyer,I looked up the user manual for EV2653 cordless phone system. The manual says to charge the included 600mAh AAA cells for 12 hours prior to first use, but subsequent maintenance charge only takes 8 hours. Base on this info, I can safely conclude that it is a dumb charger with a constant current of 75mA.You should be able to use the eneloop 800mAh AAA cells in the handset just fine. However, since the handset is being charged daily, you don't really need low-self-discharge cells in it. Ordinary 1000mAh NiMH cells may actually do better since they can provide longer talk time for the women in the house... No wait, just stick to the eneloop cells in that case. « Show Less
1779241
Now there is an interesting question. Usually you use a charger dedicated to charging nickel hydride batteries. Some charges will do both nickel cadmium and nickel hydride. The nice thing about enloops is they last through many charges, do not have a memory and hold about 75% of the charge for a year. I have used them ever since they came out and never had a problem. Fantastic for slow drain and fast drain uses. Enloop has a charger for them that works quite well, but will only charge 4 at a time. There are other chargers out there but make sure they handle NIMH.
1704645
Have you tried the eneloops yet? I haven't used them in these lanterns but I have used them in lots of other items that recharge them. Hope this helps.
687046
Those EBL batteries are marketed as 'Pre-Charged' but they are NOT low-self-discharge type like Sanyo eneloop. I measured their self-discharge rate after 3 months of storage. They are discharging at around 10% every month! Sanyo eneloop, on the other hand, live up to the marketing claim of 85% after 12 months.