1.5V USBC Rechargeable Gumstick Battery HHF-AZ01/RP-BP80/RP-BP6 For Panasonic
Since the voltage of lithium battery is 3.7V, and the voltage of Sony Walkman is 1.5V
3.7*800=2960 mAh, although there will be loss in actual discharge,
but the actual capacity is still greater than the original Ni-MH battery,
Actually tested mr230d playback time is 20 hours.
Some advantages of the product.
USBC charging.
Charging indicator. Light up the low indicator.
We will provide a charging cable