marcham
Jet Boat Junkie
- Messages
- 703
- Reaction score
- 570
- Points
- 147
- Location
- Comox, BC
- Boat Make
- Yamaha
- Year
- 2019
- Boat Model
- AR195
- Boat Length
- 19
I just did a quick test.
With the switch Off or On, the starter batt registers around 12.05-12.1 volts. The house battery is about 12.65-12.7 volts. With the switch set at emergency, both batteries register about 12.55 volts.
I did not test beyond that as it is getting dark. The batteries have been charging since Sunday evening with the exception of yesterday when I was testing it for a few minutes. When I tested yesterday, the engines would start with the switch in the On position. That was after it was charging since Sunday evening.
How many amps is your charger? What is the voltage of the start battery while being charged?
12.1V is low (50 pct discharged) for having been charged for 2 days.. Either the electrolyte is low, it was not being charged or the battery is dead.