1, Ni-MH battery must be bought at just the time to put the battery canon np-e3 battery in the power net,to measure battery capacity Ni-MH battery is working normally takes 3 --- 5 times or so, the battery in the charged particles will be fully activated.
2, charging time must be strictly according to the instructions on the time control (not the so-called red 10 --- 24 hours), to tell you 8 hours to charge 8 hours (time control in the range of about 1 hour), beyond this range of particle properties of the battery will severely decline.
3, Ni-MH battery canon digital ixus 750 battery in fact a memory, the best charge every time fasting.
4, if you once bought a four batteries, and the first use of two cameras must be grouped (for example: 1 and 2 with / 3 and 4 together), to avoid charge different capacity of batteries together.
5, different power and different capacity rechargeable battery can not be put together.
6, different brands of batteries and chargers so as not to be used together.
7, the battery can not bump or fall on the ground this would decrease the battery performance.
8, the battery can not metal objects together (key) in order to avoid short circuit.
9, long time not to be placed on the battery canon powershot sd990 is battery is fully charged, the next use of the time in the full can.
10, when used in winter as much as possible the number of spare batteries you use the camera more than 3 times in order to prevent because of the weather, the canon battery power is low (recommended temperature of -17 degrees).
