Q: I just got the batteries. What do I need to do before first using them?
For new NiMH batteries, it is necessary to cycle them three to five times before they reach peak performance. Battery cycling can be achieved simply by first charging the batteries, then using the batteries in your device, and then recharging them as you normally would. Please note that during the first few cycles your batteries may seem to run down quickly or not show their full rated capacity. Not to worry.. they will get better as you use them. Normally at least five or more cycles are required before your batteries will reach their full rated capacity.
Q: How long can the batteries hold their charge if I leave them on the shelf (shelf-life)?
At room temperature, NiMH rechargeable batteries, without usage, will self-discharge in around 30 to 60 days, depending on environmental condition. In other words, if you leave the batteries on the shelf for more than 30 - 60 days, you should recharge the batteries before using them. It is normal for batteries to be fully depleted of power after long term storage.
Q: I have not used my NiMH batteries in several months and they are not holding their charge. How can I fix this?
NiMH batteries will self-discharge if left unused. Generally, within 30 to 60 days, batteries will become completely drained. When using them, you will need to first recharge them. After extended storage, you may need to condition your batteries several times to regain nominal performance, using the conditioning feature on POWEREX MH-C204F, or the La Crosse BC-900 , or the Automatic revive/rejuvenate function available on the MH-C204W Charger.
Q: How often should I condition my batteries?
Generally speaking, NiMH batteries do not suffer from the "memory effect" and thus do not require conditioning. Nevertheless, to ensure top performance, conditioning is recommended no more than every ten charges. For Nickel Cadmium (NiCD) batteries, conditioning is recommended every time you charge your batteries.
Q: How many times can I recharge my batteries?
The number of times you can recharge your batteries will depend on the operating parameters, such as drain rate, battery care, etc. In general, NiMH rechargeable batteries can last up to 500 recharges. Under best conditions, NiMH rechargeable batteries can last up to 1000 recharges.
Q: Can I leave my batteries in the charger until I need to use it?
When used with a overnight charger or a rapid charger with automatic termination (such as the Maha MH-C204F, MH-C401FS, MH-C204W, or the La Crosse BC-900), NiMH batteries can usually be left in the charger for an extended period of time without leakage, explosion, or deformation. However, do not store the batteries in the charger if it is not necessary. Always store charged batteries in a cool location. By a cool location we mean between 40 to 80 degrees if at all possible, and refridgeration is not recommended.