TM-9-2350-311-20-1

TM 9-2350-311-20-1

I-9 INDIVIDUAL BATTERIES

An individual battery test refers to the process of testing one battery at a time. The battery could be part of a pack, a

series pair, or a single battery. Test the batteries individually if a battery series pair failed the tests and it is desired to

isolate to a single battery. Testing individual batteries gives the best evacuation.

I-10 DESCRIPTION OF TEST CARDS

The front of each test card has three sections. The top of the card explains how to connect the VTM to the batteries

being tested. The middle part of the card describes the procedure to follow in order to evaluate the batteries. The bottom

of the card contains illustrations showing typical vehicle hookups.

The back of each card also has three sections. The upper left-hand block lists the possible VTM displays and explains

their meanings. This block suggests corrective actions for the user. The right-hand side of the card contains battery test

limits for three common military batteries. These limits may be used if the vehicle/equipment TM does not provide limits.

The lower left-hand portion of the card contains a table showing how to apply the limits to evaluate the battery condition

and state of charge.

1-11 PROCEDURE TO MAKE A BATTERY EVALUATION ON THE M109A2/M109A3/M109A4/

M109A5 HOWITZER

a. Hookup

Use procedure on battery test card to hook-up VTM. The following information will enable the user to determine the

correct tests to use:

1 Use test series 73 and 75 for the following conditions:

(a) Testing a battery pack that is also powering the VTM

(b) Testing a battery series pair that is also powering the VTM

2 Use test series 77 and 79 for the following conditions:

(a) Testing a battery pack that is not powering the VTM

(b) Testing a battery series pair that is not powering the VTM

VTM

I-64

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