Can you replace 700mah rechargeable battery of 1.2v with 2800mah 1.2v battery for devices for walkman and electonic trimmers?

Yes, you can replace a 700mAh rechargeable battery with a 2800mAh 1.2V battery in devices like a Walkman or electronic trimmers, as long as the physical size and connector type are compatible. The higher capacity (2800mAh) will provide longer usage time before needing a recharge. However, ensure that the device's circuitry can handle the increased capacity without any issues. Always check the manufacturer's specifications to avoid potential damage.