I have a battery charger with a positive pole, a negative pole and a common pole, see the below diagram.
The output voltage is as follows:
positive-common 5V DC
negative-common 5V DC
positive-negative 0V
The battery specs are 10V DC at 1.5 Amp h, the battery is dead and too expensive to buy a new one.
The device that uses this battery only connects to the positive and negative terminals of the battery and is rated as a 10V device.
How do I make get 10V across positive and negative directly from the charger?