IBM I 1700 manual Battery charging will not

Checking	the	Operational		Charging:		To
check operational charging,					use a discharged ba
or a	Battery		that	has less		than 50% of the to
remaining		when	installed in		the	computer.

Perform operational charging. If the battery st does not turn on, remove the Battery and let i room temperature. Reinstall the Battery.

If the charge indicator still does not turn on, Battery. If the charge indicator still does no replace the DC-DC & BATT board, then the system Then reinstall the Battery. If the reinstalled charged, go to the next section.

Checking	the	Battery:	Battery charging will not
start	until	the Fuel-Gauge shows that less than 9

total power remains; with this condition, the Bat charge to 100% of its capacity. This protects from being overcharged or having a shortened

Do the following:

1.Power off the computer.

2.Remove the Battery and measure the voltage between battery terminals 1(+) and 7(-). See lowing figure:

						6
					5
				4
			3
Note: Signal	2
	lines, not used in these steps, a
for	communications between the system an
the	battery.

3.If the voltage is less than 10.8V (Li-Ion) (NiMH), the Battery has been discharged, re the Battery. If the voltage is still less

(Li-Ion) or 9.6V (NiMH), replace the battery.

4.If the voltage is more than 10.8V (Li-Ion) (NiMH), measure the resistance between batte minals 1 and 3. The resistance must be 390 (Li-Ion) or 4 to 30K ohm. If the resistance correct, replace the Battery. If the res correct, replace the DC-DC & BATT board then system board.

ThinkPad 390X / i 1700 33HMM