Having had many issues with rechargeable batteries, supposedly very high capacity (without brands, GP and other), I immediately tested these batteries with a high-end loader. Result: they correspond perfectly to their description. They even have a higher capacity than advertised (1049mA and 1170mA between). I have not yet had the opportunity to test these batteries over a long period, with numerous cycles of charge-discharge. I now grant full trust to contsructeurs recognized as VARTA batteries. Beware of those who bring ultra-high capacity batteries. These are often scams. The quality of very cheap batteries controls are nonexistent: you often find yourself with low capacity batteries, the life is very low.