4 ms·
For batteries it tends to be multiple of the battery cell voltages. So 48v is probably so you could wire 4x12v batteries in series but that is a guess. With too
by owengee 3y ago
For batteries it tends to be multiple of the battery cell voltages. So 48v is probably so you could wire 4x12v batteries in series but that is a guess. With tool voltages this tends to be a multiple of the nominal battery voltage (rounded for marketing).
- stickfigure 3y agoTo riff on this, a lead-acid cell is 2.2v. If you look at the 12v battery in your (typical) car, it has six cells. It's less obvious with modern sealed batteries, but super obvious with flooded lead acid batteries in golf carts. Lithium batteries do not have 2.2v cells; typical li-ion cells are 3.7v. So there's no particular reason why you should stack them to 48v, except that there's already some amount of industrial capacity for 48v components due to the preponderance of 48v golf carts. Of course, these systems don't work at exactly 12v or 48v or whatever; voltage on the bus fluctuates with state of charge (and state of charging).
- 1970-01-01 3y agoThis is it, there are many ways to get there. The 48-volt architecture is achievable with four 12-volt lead acid batteries in series, or thirteen lithium-ion cells in series at their nominal 3.7-volts, or fifteen LiFePo4 cells in series at their nominal 3.2 volts. You can ask for any of these to manufacture a 48-volt vehicle.