Jeanneau Velasco 37 F, Owner'S Manual, Page: 54 / 100

- 54 -
Maintenance of watertight batteries
- This type of battery needs no maintenance and does not produce any gas during normal use.
No ventilation is needed.
- The optimum temperature for use is between 10 degree C and 30 degrees C. Lower
temperatures will reduce the available capacity. Higher temperatures will increase the
batteries' self-discharge rate.
- Never open watertight batteries.
- Never add acid or distilled water.
- The pressure valves are used to seal the batteries and cannot be opened without being
destroyed.
- If the batteries overheat, a build-up of gas may develop: Keep away from the batteries.
7.2.2 Battery switch
- Manual battery switches: to make the system live, manually turn the positive and negative
battery isolator switches.
Location: Companionway
1. Battery breaker - "positive terminal - engine"
- Port side
2. Battery breaker - "positive terminal - engine"
- Starboard
3. Battery switch "common negative"
4. Battery switch "service positive"
- Turn off all battery breakers before leaving the vessel: risk of complete
discharging of whole battery bank .
- Avoid touching the battery breakers when they are live.
- Never switch off the battery breakers when the boat's engine is running (risk
of serious damage to the charging circuit).