JLG 15/20MSP Operator Manual - Manual (Page 30)

SECTION 3 - MACHINE CONTROLS, INDICATORS AND OPERATION
3-4 – JLG Lift – 3121230
To Charge Batteries
1. Park machine in a well ventilated area near an AC voltage
electrical outlet.
Battery Charging Status Indicators
The battery charging status indicators are located just above the
Charger AC input receptacle on the center cover section at the
rear of the machine. (See Figure 3-1. on page 3-8)
1. When plugged in the charger will automatically turn on and
run through a short LED indicator self-test (all LED’s will flash
in an up-down sequence for two seconds).
2. The YELLOW ‘CHARGING’ LED will turn on and a trickle cur-
rent will be applied until a minimum voltage is reached.
Once a minimum battery voltage of 2 volts per cell is
detected, the charger will enter the bulk charging constant-
current stage and the YELLOW ‘CHARGING’ LED will remain
on. The length of charge time will vary by how large and how
depleted the battery pack is, the input voltage (the higher,
the better), and ambient temperatures (the lower, the better).
If the input AC voltage is low (below 104VAC), then the
charging power will be reduced to avoid high input currents.
If the ambient temperature is too high, then the charging
2. Always use a grounded
AC outlet. Connect char-
ger to an outlet that has
been properly installed
and grounded in accor-
dance with all local codes
and ordinances. A
grounded outlet is
required to reduce risk of
electric shock – do not
use ground adapters or
modify plug. When using
an extension cord, avoid
excessive voltage drops
by using a grounded 3-
wire 12 AWG cord.
CHARGING
YELLOW (MIDDLE) LED ON
Charge Incomplete