The NI-MH battery is in terms of energy available between the nickel-cadmium and lithium-ion batteries that are found in our phone. It has the advantage of being affordable price level and maintain long storage capacity. Disadvantage, Ni-MH require specific and if possible quality charger. Indeed, they do not support overloading. The AmazonBasics batteries have 2500 mAh with excellent capacity. Well managed they should provide excellent service life, exceeding several years. They will be perfect for a flashlight or radio and all energy consuming devices. An oversight in a device should not have medium-term consequences. This lot has been preloaded with a solar charger, the charging solution dream. Recycling is mandatory via a waste. Potentially one of the best-value ratio.