TM 9-6230-210-13&PNOTEThe 6TN and 6TL batteries can be mixed or matched. However, maintenance-free batteries cannot be mixed or matched with military batteries. The 6TN and/orthe 6TL batteries will perform properly in hot weather as long as electrolyte levelsare carefully monitored. If the electrolyte expands and causes the level to rise,some fluid must be removal. If the level becomes too low due to evaporation, dis-tilled drinking water (excluding mineral water) maybe used if distilled water is notavailable.Electrolyte (NSNs 6810-00-249-9354 and 6810-00-843-1640) has a specificgravity of 1.280 and should be used in these batteries. DO NOT adjust the electro-lyte in wet batteries to a lower specific gravity.a. Remove six caps from battery.b. Using a syringe, add enough distilled water to fill each cell to ledge only.c. Reinstall six caps.3-14
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