Wahl Bellina Lithium Battery & Circuit Board (WM1870-7901)
Replacement lithium ion battery with circuit board for the Wahl Bellina clipper.
Part code: WM1870-7901
It's no longer possible to buy a new battery on its own, so these are now supplied ready integrated with the circuit board.
Please note that fitting the circuit board is a skilled operation that requires significant amounts of soldering and should only be undertaken by an experienced electrical engineer.