10. Excessive lighting current, due to too many or too large lamps. Remedy: Check by turning on all lamps while engine is running. Ammeter should show three to five amperes charge with lamps burning. In winter the charging rate may have to be increased.
B. Question Driver as to following causes of low gravity and low voltage:
1. Has water been added regularly?
2. Has impure water, such as faucet, well, or river water ever been added to battery?
3. Has too much water been added?
4. Has electrolyte been spilled and replaced by water?
5. Has battery been idle, or stored without regular charging?
6. Is car used more at night than in daytime? Considerable night driving may prevent battery from being fully charged.
7. Is starter used frequently?
8. What is average driving speed? Should be over 15 M. P. 11.