TM 9-2320-365-10b. Testing Batteries.(1) Start engine (para 2-21a).(2) Shut down engine after idling for approximately four minutes (para 2-21f).WARNING• Lead-acid battery gases can explode. Do not smoke, have openflames, or make sparks around a battery, especially if caps are off.Battery may give off gas which can explode. Failure to comply mayresult in serious injury or death to personnel.• Remove all rings, bracelets, wristwatches, neck chains, and other jewelrybefore working around vehicle. Jewelry may catch on equipment or mayshort across an electrical circuit or battery terminal. Failure to comply mayresult in serious injury or death to personnel.(3) Remove battery tester (1) from clamp(2) on battery tray (3).NOTEIf battery tester red lightilluminates then battery testeris operational. If red lightdoes not illuminate notify UnitMaintenance.(4) Check operation of battery tester (1) bytouching tip of battery tester (1) topositive battery post (4).NOTEAll four batteries can be checkedthe same way. Check inside cells ofinside batteries first, outside cells ofoutside batteries last. Left frontbattery shown.(5) Remove battery fill caps (5) frombattery (6).3-99
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