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TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download

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TM 9-2350-311-10 3-5 HULL MAINTENANCE PROCEDURES — CONTINUED 3-5.3 Servicing Batteries — Continued b. Electrolyte Level 1 Clean off filler caps before removing. Do not allow dirt or foreign matter to get into battery cells. 2 Keep the vent holes in filler caps clear to allow gas to escape from cells. 3 Electrolyte level must not drop below the top of the battery plates, If this condition exists, fill battery to the level ring with distilled water (item 13, Appx D). c. Corrosion Battery corrosion is an acid and will eat holes in clothing. Wash any acid off skin immediately to avoid the burning effects. 1 Corrosion tends to build upon the battery posts, lugs, and cables. This corrosion may damage cables and lugs. If corroded, notify unit maintenance. NOTE Make sure battery filler caps are tight and no cracks are visible in battery case. 2 Clean top of battery with a damp rag (item 35, Appx D) and wipe dry. d. Unserviceable Batteries Deep-cycling is a complete discharge of the batteries. This will lessen battery life and, in freezing weather, will burst the battery case. Avoid running the battery down. If the batteries fail, notify unit maintenance. 3-20