KKK-A-1822 E
Battery switch / device wiring and added/ modified starting motor circuit wiring shall meet or
exceed the SAE J1127 for high temperature SGX wire and SAE J541 for maximum voltage
drop requirements for 12 volt heavy-duty applications.
When specified (see 6.2-R), the batteries, on Types I & III vehicles, shall be located in the
module, sealed from the interior, or on Type II vehicles, in a compartment or lower skirt. Batteries
shall be on a slide out tray or be readily available for service. When relocating batteries, the
method of relocation shall be approved by the chassis manufacturer.
NOTES:
1. MODULE BATTERY LOCATIONS CAN PROVIDE FOR IMPROVED
FRONT/REAR AND LATERAL WEIGHT DISTRIBUTION AND FOR A
LOWER CENTER OF GRAVITY.
2. PURCHASERS SHOULD SPECIFY A BATTERY CONDITIONER TO
RECHARGE WHEN NECESSARY, AND TO MANTAIN CHASSIS
BATTERIES IN THEIR FULL STATE OF CHARGE REGARDLESS OF
PARASITIC LOADS. (THE BATTERY CONDITIONER WILL
RECHARGE PORTABLE EQUIPMENT BATTERIES WITHOUT
DRAINING CHASSIS BATTERIES. SEE 3.7.7.2)
3.7.7.1 BATTERY CHARGER OR CONDITIONER.
When specified (see 3.15.3-7), either a 12 volt DC taper type battery charger or automatic
charger/conditioner shall be provided. The charger/conditioner shall be listed by an
organization meeting the requirements in Paragraph 3.7.8 and connected to the 12 volt DC
battery system as shown in Figure 5A or 5B, and Figure 7. The charger shall be capable of
supplying a minimum of 10 amperes charging current. The charger/conditioner shall be
permanently mounted, in the vehicle, in a properly ventilated, accessible location and wired
to the 115 volt AC utility power as specified in 3.7.8 and Figure 6.
When a battery conditioner is provided, it shall monitor the battery state of charge and, as
necessary, automatically charge or maintain the batteries without gassing, depleting fluid
level, overheating, or overcharging.
3.7.7.2 PORTABLE EQUIPMENT CHARGING CIRCUIT.
A circuit shall be furnished (Figure 7) for charging all portable battery powered devices,
i.e. suction units, hand lights, defibrillators, portable radios, etc. This circuit shall
prevent discharge of chassis batteries by only permitting the charging of portable devices
when the vehicle is either running or the battery conditioner is connected to shore
power(operational). Circuit breaker protection shall be provided and shall have a
minimum of 10 amp capability. An additional tagged, identified lead shall be furnished in
both the cab and module for connection of additional (future) portable equipment that
requires recharging. When specified by the purchaser, (see 3.15.3-7) additional leads
shall be furnished, and shall be located in areas as designated by the purchaser. A
permanently mounted decal or engraved plate shall be furnished in a conspicuous location in
the cab stating, "This vehicle is equipped with a battery conditioner to maintain batteries in a
full state of charge, and a dedicated 12 volt recharging circuit for portable battery powered
equipment. For operation, vehicle shall be plugged into 115 volt AC shore power during
periods of non-use".
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