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Best Rechargeable Batteries?

I have been looking around for rechargeable batteries to replace my ageing AA size GP2300 batteries. These batteries are for my old prosumer Nikon digital camera.

The main thing GP2300 Ni-MH BatteryI hate about these GP batteries( and most of the normal Ni-MH batteries) is because it discharges very fast even though it comes with impressive capacities. Another thing is draining the batteries and it's memory effect. I don't want a half charged battery when I go out. And at the same time worry, whether I should go ahead fully charge the battery which might affect it's efficiency.

Fortunately for all of us, there are Hybrid Ni-MH ( or low self discharge battery ) on the market now. Hybrid Ni-MH batteries allow you to use the battery out of the box. It does not discharge fast and retains it very well. Best feature about these Hybrids is you can charge the batteries at any point, whether it's half, quarter or three quarter charge.

Let's take a look at some Hybrid Ni-MH batteries on the market.

Eneloop ( by Sanyo )GP2300 Ni-MH Battery
Capacity: 2000mAh
Rechargeable up to 1000 times
Retains up to 85% of charge after one year of storage.
Pre-charged and ready to use out-of-package.
Sanyo is the pioneer for Hybrid Ni-MH battery. Batteries are made in Japan, and chargers made in China. Slightly lower capacity than the other hybrids. Looks like a Sanyo Eneloop 4 Pack AA NiMH with Charger sells for $18.11(at the time of posting) on Amazon.com . Also, Duracell Hybrid Battery is basically a repackaged Eneloop.

Imedion ( by Maha Powerex )
GP2300 Ni-MH Battery
Capacity: 2100mAh
Rechargeable up to 1000 times
Retains up to 85% of charge after one year of storage.
Pre-charged and ready to use out-of-package.
Batteries made in Taiwan. Got the same favourable reviews as Eneloop. I might just buy this and try. Checkout Imedion's price on Amazon.com .

GP Recyko ( by GP, Golden Peak )
GP2300 Ni-MH Battery
Capacity: 2050mAh
Rechargeable up to 1000 times
Retains up to 85% of charge after one year of storage.
Pre-charged and ready to use out-of-package.
Not much has been said about this battery, but I've seen tons of them in shops around my place. Batteries are made in Hong Kong/China/Singapore/Taiwan or Malaysia.

Hybrio ( by Uniross )
GP2300 Ni-MH Battery
Capacity: 2100mAh
Rechargeable up to 500 times
Retains up to 70% of charge after one year of storage.
Pre-charged and ready to use out-of-package.
Charge retention is lower compared to others. And rechargeable up to 500 times only, I don't think I'll be buying this battery.

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