the problem is the mouse not the battery. You keep searching to cheap and long lasting battery but there is no such thing. Long lasting batteries will always cost more. Cheap one uses cheap metal (not alkaline) thus it's cheaper but it won't last.

What you pay is what you get.

Best battery to use for cordless mouse is Energizer e2. THis one cost RM16.90 for pack of 2 pieces. It is very light and pack juices of alkaline.

If you want longer lasting mouse then get expensive mouse like logitech and microsoft. No point getting cheap cordless mouse but you end up have to constantly change the battery which in the end cost you even more.

For eg,

Cheap mouse :
Energiser e2 - RM16.90 (2 pieces)
- last 5 month = RM3.38 per month

Energiser Alkaline - RM8.90 (2 pieces)
- last 4 month = RM2.22 per month

Cheap Heavy Duty - RM5.90 (2 pieces)
- last 2 month = RM2.95 per month

Expensive mouse:
energiser e2 - RM16.90
- last 8 month = RM2.11 per month

So you end up paying more for the battery if you stick with cheap mice that doesn't last.

Thinking to go for rechargeable batteries?
Well, most rechargeables are a hassle to use. A lot of them go faulty and cheap ones doesn't last long. You need to constantly keep them charged which is tedious and waste electricity. But eneloop that doesn't discharge, hmm...i never tried this but I will stick with energiser e2 for now.

TS also said something about turning the mouse off when not in use. Even with that the mouse last less than 2 months. My logitech mouse, i don't even bother to turn it off it has auto cutoff feature when not in use. Last me more than 8 month. Don't you take this into account when you talk about "good" mouse?

This post has been edited by abubin: Jan 12 2010, 04:03 PM