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  TM 9-6140-200-14
b. Charging Procedures (6TLFP) by using charger assign at unit level.
Read battery charger instructions overpacked with charger.
(1) Group batteries according to their OCV as follows for charging:
(Manufacturer Recommended)
Approximate Charging hours
Voltage Readings
(use as Guide Only)*
* Issued charger supplies at least 40 amps for each battery being charged.
18-20 hours
(a) 10.5 to 11.0 voltage
14-16 hours
(b) 11.1 to 11.5 voltage
10-12 hours
(c) 11.6 to 12.0 voltage
6-8 hours
(d) 12.1 to 12.5 voltage
(2) Use one of the following to measure Specific Gravity Optical
battery tester NSN 6630-00-105-1418 or Hydrometer (Float)
(80F/80F) NSN 6630-00-171-5126.
Approximate
Optical Tester
Hydrometer Tester
Charging Hours
Readings
Readings
18-20 hours
(a) 1.110 to 1.140
(a) 1.120 to 1.150
14-16 hours
(b) 1.141 to 1.170
(b) 1.151 to 1.180
10-12 hours
(c) 1.171 to 1.200
(c) 1.181 to 1.210
6-8 hours
(d) 1.201 to 1.235
(d) 1.211 to 1.245
2-4 hours
(e) 1.236 to 1.265
(e) 1.245 to 1.275
3-31
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