BTY AA 2500mAh (Silver-blue)
Official specifications:
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Size: AA
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Nominal Capacity: 2500mAh
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Model Number: RB1001
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Type: Rechargeable battery
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Place of Origin: Guangdong, China (Mainland)
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Voltage: 1.2V
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Chemistry: Ni-MH (Nickel Metal Hydride)
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Rechargeable Times: up to 1000 times
Maximum temperature raise at different discharge currents: 1A:+1,5°C, 2A:+0,7°C, 3A:+0,2°C, 5A:+0,0°C, 7A:+0,0°C, 10A:+0,0°C
NiMH with a high capacity and very low weight, this is too good to be true.
About 1/20 of rated capacity.
Conclusion
These batteries are a waste of money, maybe something can be recycled from them, but most likely they belong in a landfill.
Rating is bad.
Notes and links
How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium