Invacare 1125078 service manual Battery Quality, Field Load Test

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

WARNING

When performing STEPS 5 and 6, ensure feet are clear from casters and wall, otherwise injury may result.

5.Sit in wheelchair and place feet against a wall, workbench or other stationary object.

6.Turn the power ON and carefully push the joystick forward, trying to drive the wheelchair through the stationary object.

NOTE: This puts a heavy load on the batteries as they try to push through the stationary object. If the wheels spin, have two individuals (one on each arm) apply as much downward pressure as possible on the arms of the wheelchair.

7.Read the meter while the motors are straining, no longer than 3-4 seconds, to determine the voltage under load.

NOTE: If the voltage drops more than two volts from a pair of fully charged batteries while under load, they should be replaced regardless of the unloaded voltages.

Charger Digital

Port Voltmeter

BATTERY

QUALITY

0 to 2 volts	Good
2 to 2.5 volts	Poor
2.5 or more	Bad

FIGURE 3.1 Field Load Test

At’m and At’m QT 28 Part No. 1125078