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  Deep Cycle Battery Care and Maintenance

Deep Cycle Battery Care and Maintenance


New Deep Cycle Battery should be given a full charge before use.

New Deep Cycle Battery need to be cycled several times before reaching full capacity (20 - 50 cycles, depending on type). Usage should be limited during this period.
 
Deep Cycle Battery cables should be intact, and the connectors kept tight at all times. Systematic inspection is recommended.

Vent caps should be kept in place and tight during vehicle operation and battery charging.
 
Deep Cycle Battery should be kept clean, free of dirt and corrosion at all times.

Deep Cycle Battery should be watered after charging unless plates are exposed before charging. If exposed, plates should be covered by approximately 1/8" of acid.

Check acid level after charge. The acid level should be kept 1/4" below the bottom of the fill well in the cell cover.

Water used to replenish Deep Cycle Battery should be distilled or treated not to exceed 200 T.D.S. (total dissolved solids...parts per million). Particular care

should be taken to avoid metallic contamination(iron).

For best Deep Cycle Battery life, batteries should not be discharged below 80% of their rated capacity. Proper battery sizing will help avoid excessive discharge.

Deep Cycle Battery chargers should be matched to fully charge batteries in an eight hour period. Defective chargers will damage batteries or severely reduce their performance.
 
As batteries age, their maintenance requirements change. This means longer charging time and/or higher finish rate (higher amperage at the end of the charge). Usually older batteries need to be watered more often. And, their capacity decreases.

Avoid charging at temperatures above 120?F or ambient whichever is higher.

Deep Cycle Battery need to be equalized periodically. Equalizing is an extended, low current charge performed after the normal charge cycle. This extra charge helps keep all cells in balance. Actively used batteries should be equalized once per week. Manually timed charges should have the charge time extended approximately 3 hours. Automatically controlled chargers should be unplugged and reconnected after completing a charge. In situations where multiple batteries are connected in series, parallel or series/parallel, replacement battery(s) should be of the same size, age and usage level as the companion batteries. Do not put a new battery in a pack which has 50 or more cycles. Either replace with all new or use a good used battery(s).

Periodic Deep Cycle Battery testing is an important preventative maintenance procedure. Hydrometer readings of each sell (fully charged) gives an indication of balance and true charge level. Imbalance could mean the need for equalizing, is often a sign of improper charging or a bad cell. Voltage checks (open circuit, charged and discharged) can locate a bad battery or weak battery. Load testing will pick out a bad battery when other methods fail. A weak battery will cause premature failure of companion batteries.

Always use a matched voltage charger and Deep Cycle Battery pack system. An undersized charger will never get the job done, no matter how long you let it run. An oversized charger will cause excess gassing and heat; this situation could cause explosions or other damage.

 
 
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