CAUTION: Always wear protective clothing, gloves, and goggles when handling batteries, electrolyte, and charging your battery.
Batteries should be carefully inspected on a regular basis in order to detect and correct potential problems before they can do harm. It is a good idea to start this routine when you first establish your battery bank. AGM batteries have no available electrolyte that can be drawn from the fiberglass mat and are also usually sealed (VRLA**) and therefore cannot be tested for specific gravity cannot be done, however resistance and also voltage can be used if the AGM batteries have had absolutely no electrical loads or charging for 4+ hours. Flooded lead-acid batteries are much easier to test, as follows.
lead acid battery
Examine the outside appearance of the battery:
Any fluids on or around the battery may be an indication that electrolyte is spilling, leaching, or leaking out. Leaking batteries must be replaced.
Check all battery cables and their connections.
State of Charge
Battery Ailments and Problems
charged ions within a lead acid battery sink to the bottom of the cells.
This leaves discharged electrolyte or diluted electrolyte at the top. The
results is oxidization at the top of the plates and accelerated corrosion at the
bottom of the cells due to higher acid concentration.
Battery RX for flooded acid cells
Stratification and lead sulphate may be partially removed from cells via a controlled equalization charge. During equalization a 2.35 - 2.4 Volt per cell is charge is applied to the battery.
Equalization is indicated when:
REMINDER: Tighten all wiring connections to the proper specification. Make certain there is good clean contact with the terminals.
WARNING: Do not over tighten terminals. Doing so can result in post breakage, post meltdown, or fire.
** VRLA = valve regulated lead acid
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