Charging alkaline batteries — Save money on battery purchases
It makes sense to use alkaline batteries
Alkaline batteries have long shelf lives and they do not suffer the ‘memory effects’ of Nickel-cadmium batteries. The term ‘Memory effects’ refers to the batteries becoming weaker with continued use, particularly when the batteries have seen light use and do not respond well to further charging. The problem stems from low battery currents which flow from only a small part of the active anode area of the battery. If higher current had been drawn or if the battery had been completely discharged, the whole active area of the anode would have been involved. The unused area essentially ‘films over’ and acts as a barrier to current flow. Further charging does not restore the active area.
Alkaline batteries do not self-discharge. This is a chemical change causing the electrodes to degenerate in Nickel-metal hydride and Nickel-cadmium batteries. It is reversible by charging and discharging several times. Batteries that are not recharged before use will not supply the full amount of stored energy. None of the above happens with common Alkaline batteries. The rate of self discharge in Nickel-cadmium is about 2% per week, in Nickel-metal hydride it is about 3% per week. At temperatures higher than room temperature, these rates increase.
Assuming you now have a charger to safely charge alkalines, don’t wait for the battery to stop working. In order to achieve ten times extension of the normal life of an everyday alkaline battery, you will have to recharge it frequently, many more times than ten. It makes sense to use a second set of batteries for a high drain device. Take out one set of batteries when the device is not being used, and put in the second set that has been recharged. Charge the first set and carry it with you as a backup if necessary.
You will be surprised how easily children will be attracted to charging their own batteries in their toys and possessions. Managing their own batteries is fun, and they know it helps the environment by not having to throw batteries away when they can recycle them.
All the background information was absorbed and a totally re-engineered product emerged, the Battery Xtender ™ Tests have shown that it does live up to expectations, and that the claims of ten times life extension for ordinary alkaline batteries are not exaggerated. The case has been redesigned to allow easy one-handed access to the batteries, and it occupies much less space on a desk, table top or counter.