Mell How do you tell if a battery is NiMH or NiCd?
If the cell is good, you should know, by the capacity and size of the cell, what the chemistry of the cell is. If the batteries have a covering on them and it’s green, then it’s NiMH. Unless it’s a Sanyo or Panasonic industrial NiCd cus a lot of them had green wrappers too .
Are mAh batteries the same as NiMH?
Key difference: NiMH is a type of rechargeable battery. mAh is the calculation of the energy that can be delivered by the battery. NiMH and mAh are both terms that are most frequently used with batteries, specifically rechargeable batteries.
How do I know what size my NiMH battery is?
The battery capacity is simply the load current times the elapsed time in hours. Normally, you would start this test with a fully charged battery. You can check a battery’s capacity using this method with only a resistor as load, a voltmeter and a stop watch.
How many mAh is a rechargeable battery?
Most rechargeable AAs have a 2,000 mAh capacity, while most AAAs have an 800 mAh capacity. If you want a battery that works well with power-hungry electronics, get one with an above-average capacity. (To be clear, the average raw capacity of alkaline AAs is 2,500—higher than rechargeables.
How are NiMH batteries different from other rechargeable batteries?
Like most other rechargeables, NiMH batteries maintain most of their voltage over the whole charge and then suddenly plummet. This contrasts to alkalines, which lose their capacity steadily. For this reason many electronic devices that tell you how much battery life is left have a hard time reporting an accurate level for NiMH’s.
How often should I refresh my NiMH batteries?
You can get over 1,000 uses out of these batteries if you take care of them properly. The batteries might need a quick refresher, especially if they have been in storage for awhile, so they will properly hold a charge. Use the digital multimeter as described in the instruction manual to test the voltage of each battery you wish to refresh.
Is it necessary to fully drain Ni-MH batteries?
This is when a battery must be fully drained before recharge or their capacity is reduced. The New Generation of NIMH batteries do not develop a memory effect and can be recharged at anytime during usage cycle. When uncertain about battery charge level or condition, recharge it.
How do you check the voltage of a NiMH battery?
Touch the black cable alligator clip of the AC adaptor to the negative end of the battery. Hold for three seconds. Take the AC adaptor away from the battery. Test the voltage again with the digital multimeter. If the voltage is the same, repeat this process again.