Battery Re-Charging Procedure - Lotus TURBO ESPRIT Service Manual

Page 22
SECTfON EMA
SUB GROUP J
-
Battery Re-charging Procedure
lnstruc tions for Tungstone Powermaster Maintenance Free Batteries.
To determine the state of charge o f the battery, apply a brief d i ' s ~ h i r ~ e o f no more
than ten seconds duration (e.g. turn on headlights) with the engine off, and then
allow to stand on open circuit for two to three minutes.
Measure the terminal voltage o f the battery.
If
steady voltage
is
below
12.4
Volts, recharge battery a s follows.
Note: The battery must not be boost charged.
- -
If
necessary, f i t a replacement battery to the vehicle, whilst original
battery i s charged as fol lows.
Remove battery from vehicle.
Constant Current: The battery must be charged at a maximum o f
5
amps until
the battery terminql voltage (on charge) has stabil ised over a one hour period,
at which time the voltage w i l l be i n the range 16.0
-
16.5
V.
Atthis &age
the battery must be taken off charge IMMEDIATELY, to prevent excess gassing
with resulting water loss which w i l l ultimately reduce the guaranteed service
iife.
Constant Voltage: The battery may be charged at avoltage up to a maximum
of 15.8V providing the current
i s
carefully monitored and the charge terminated
when the current
has
tapered off and changes by less than 0.1 amp over a period
of one hour.
If
i t is not possible to monitor the current during charging, then
the voltage must be restricted to
14.4 V
maximum.
Battery access
APR
1987