The simple answer is no.

With a lead acid battery voltage begins to drop as soon as a load is applied and so the drop in voltage over time can be used to estimate state of charge. Because lithium batteries have a very flat volt curve, voltage cannot be used to determine the battery’s state of charge. Instead we have to count amps in and amp out of the battery to calculate the state of charge. This requires a software algorithm within the BMS to perform and display on the screen as a 0-100% readout.