Wide CompatibilityHigh-quality replacement batteries for HX 290, HX290 (use "Ctrl+F" to search for compatible models) or more compatible models found in the product description.
^^ Battery parametersVoltage: 7.4V, Capacity: 1140 mAh/ 8.44 Wh, Size: 131.43 x 59.20 x 39.05 mm, Weight: 295.8 g. ^^ Perfect replacement Large-capacity cycle function, the new complete decoding chip works the same as the original chip, and is a perfect replacement for genuine batteries. ^^ Excellent QualityHigh quality, no memory effect, replacement batteries have been tested by professional testers under strict quality control standards, overheating protection, overcharge protection, overload protection, short circuit protection, safety protection. You can use the replacement battery with confidence. ^^ Note on battery After receiving the battery, let the battery charge for 2-11 hours first, so that the battery life will be longer.