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batteryuniversity.com/learn/article/all_about_chargers Battery UniversityOct 16, 2015 - Figure 1: Battery and charger must go together like horse and carriage.... charge time but there are limitations as to how fast a battery can be charged. .....There are universal lithium chargers available but these only charge at .... i want acharger to charge my lead acid batteries(12V-26Ah) within 6hours.
data.energizer.com/PDFs/Rechargeable_FAQ.pdf Can I use another manufacturer's charger to charge my Energizer® NiMH Rechargeable batteries? 18. ... 22 Why are rechargeable batteries 1 2 Volts? 22. ...When not in use, nickel metal hydride batteries will lose 20% to 50% of their chargewithin six months due to ... Energizer offers several universal voltage chargers.
Nickel-Metal Hydride (NiMH) batteries are usually charged in pairs in consumer chargers. The CHDC7 can charge two or four batteries at a time. Their position in the charger is important (see the link at the end of this note). Each battery has a separate pair of green LEDs. There are no other LEDs on this charger. The LEDs light up to show the state of charge. Flashing means it is charging. Solid means it has reached that level of charge (ie, 1 LED = half charged, 2 LEDs = fully charged). The batteries will get warm but not uncomfortably so. After some practice you will be able to tell if they are getting too hot (which may signal a worn-out battery which should then be replaced). Like all rechargeable batteries, NiMH batteries have a finite life (measured in number of times they've been discharged and recharged). IMHO, they should also be used and charged in matched pairs. I mark them when I take them out of the box and keep them paired in use and in charging for maximum life. Yes, the devices that use 3 batteries are a pain to deal with. LOL. All details can be found on this Energiser data sheet: http://data.energizer.com/PDFs/chdc7_instructions_english.pdf
P.S. The CHDC7 remains open for charging. Closing it for storage is optional but minimizes the space it takes up.
Charge time depends on the mAh capacity of the batteries (should be listed on the package, or the side of the battery) most AAAs are under 900mAh so 2 hrs should be sufficient, but AAs vary greatly in capacity so heres a link to check after you look up your mAh rating
I don't think you are doing anything wrong, just the setup you are useing is'nt as effective as you would like.
I use the energizer rechargeable (NiMH) batteries with the energizer 15 minute charger. The other batteries and chargers just don't seem to work as well. I get several hours of play time on a single charge, where I was only getting about 1/2 hour to an hour with the others. **No I am not a paid endorser, I just use and like the product!**
Hope this helps, please let me know how you end up or if I can help more.