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Rechargeable Ni-MH Batteries Field Results

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1. KEEP from Malaysia

2. GP from Hong Kong

3. UNiROSS from France

4. Sony from Japan

These are four type rechargeable Ni-MH batteries I used for my digital camera since last ten years.

Their pricing more or less is same. Some of them claim that 500 recharge cycles are possible before depletion problem.

It that true?

For instance, GP battery hardly can be recharged for 20 cycles before rapidly losing it rechargeablility and capacity.

Which brand is truly outstanding and meeting my expectation? My 10-year field usage said 3 out of 4 batteries above do not meeting their wild claim given in the specification sheet.

Only Sony battery is meeting my expectation in term of endurance and recharging cycle. Japanese product is again stand out in quality.