POST THESE INSTRUCTIONS IN THE BATTERY MAINTENANCE AREA
TUBULAR-LM™ LOW MAINTENANCE MOTIVE POWER BATTERIES
INSTALLATION AND OPERATING INSTRUCTIONS
1. SAFETY
1.1 Follow your company’s Safety Instructions when working with or near industrial truck batteries.
Observe the caution label affixed to the battery. Thoroughly familiarize yourself with industry and
government guidelines (OSHA, ANSI) for charging, handling, and maintaining industrial
batteries.
1.2 Assign battery and charger care to properly trained personnel.
1.3 This battery contains sulfuric acid electrolyte. Avoid contact with skin, eyes, or clothing. Wear
rubber apron, gloves, boots, and goggles or face shield when handling, checking, filling,
charging or repairing batteries.
1.4 Keep water readily available for flushing spilled electrolyte from eyes or skin. Use plain water
only and obtain medical attention immediately. Special deluge showers and eye washbasins are
required.
1.5 Batteries produce hydrogen and oxygen gas during charge. Keep open flames away. Do not
check electrolyte level with a cigarette lighter or match. Use a flashlight or permanent lights.
Switch on/off away from the top of the battery. Do not smoke or create sparks.
1.6 Lift batteries with a certified/approved hoist, crane, lift truck, or similar equipment. Move
batteries with trucks, conveyors, or rollers. Be sure to place a rubber mat or similar insulating
material across the tops of coverless batteries when handling. Make sure equipment is of
ample strength and properly installed.
DO NOT USE CHAIN OR WIRE ROPE SLINGS.
1.7 Never lay metal tools, such as wrenches or screwdrivers, on top of a battery.
1.8 Disconnect the battery from the truck when performing maintenance and repair on motor or
electrical system.
1.9 Open or “break” the battery circuit before attempting repairs to the charging plug or receptacles.
1.10 Apply a strong neutralizer, such as baking soda or soda ash, when electrolyte is spilled on the
floor. Check local regulations regarding the disposal of neutralized waste.
Page 1
2. RECEIVING BATTERIES
Immediately upon receipt of shipment, examine the outside of the packing for signs of rough handling
before accepting the battery from the carrier. Wet spots on the shipping pallet may be an indication of
leaking jars broken in shipment.
If there is evidence of damage, the receipt should be signed and both copies (carrier’s and receiving
copies) marked “Shipment Received Damaged”. The carrier should be called immediately and asked
to make a “Carrier’s Inspection for Damage Report”.
If “concealed” damage is later detected, the carrier should be called immediately and requested to
make a “Carrier’s Inspection for Concealed Damage Report”. After inspection by the carrier,
®
arrangements should be made with the local GNB
Industrial Power representative to have the battery
repaired before placing it in service.
BEFORE PLACING BATTERIES IN SERVICE,
REVIEW AND FOLLOW THE SAFETY GUIDELINES LISTED IN SECTION 1.
REVIEW AND FOLLOW THE SAFETY GUIDELINES LISTED IN SECTION 1.
BEFORE PLACING BATTERIES IN SERVICE,
3. PLACING IN SERVICE
Verify that the battery weight meets or exceeds the minimum truck weight requirements. Allow the
battery to cool or warm to room temperature before charging or adding water. Make sure the battery
charger is properly matched to the battery. Use a charger with automatic charger termination controls.
GNB recommends the use of an SCR charger with an I-E-I charging profile in order to achieve
a minimum 45-day watering interval. To achieve a minimum 90-day watering interval, GNB
®
requires the use of a GNB
SCR charger with a Tubular-LM™ charging profile.
Open the vent caps from each cell and check to see that the electrolyte level is above the plate
separators. If it is obvious that the electrolyte has spilled out of any cells, replace it with electrolyte of
the same specific gravity as found in the other cells of the battery (1.280 – 1.290). Close the vent caps
and give the battery a freshening charge until there is no increase in specific gravity for three
hydrometer readings taken at one-hour intervals.
During shipment of the battery, low temperatures and/or normal shock and vibration often results in a
drop in the electrolyte level. If the level is below the plate separators, recheck it after 3 hours of
charging. If the level remains below the plate separators, add water or electrolyte to the proper level
at the end of charging.
Following the first 90 days of service, the battery should reach its normal operating specific gravity of
1.295 to 1.345 at 77° F (25° C).
IF BATTERIES ARE NOT IN REGULAR USE, KEEP THEM CHARGED.
CHECK THE SPECIFIC GRAVITIES MONTHLY AND GIVE THE BATTERY A FRESHENING
CHARGE (3 OR 4 HOURS AT THE FINISH RATE) IF THE GRAVITIES HAVE FALLEN 0.030
OR MORE; OTHERWISE GIVE A FRESHENING CHARGE EVERY THREE MONTHS.
Page 2
4. OPERATION
Batteries are rated in ampere-hours (Ahr) and are selected to perform a specific workload within an
established period of time. Increasing the workload or time period could result in over discharging, thus
shortening battery life. Limit discharging of the battery (to 80% or less) so that specific gravities do not
go below 1.180. If truck operation results in only partial discharges (40% or less) and specific gravities
are 1.250 or more at the end of the shift, recharging may be deferred and the battery used for another
shift, providing the workload is not expected to increase. Hydrometer readings and experience will
determine the frequency of charge intervals under these circumstances.
A battery should always be recharged immediately following a complete discharge. Never allow it to
remain in a discharged condition; otherwise, permanent damage may result. A battery is designed to
be operated as follows:
8 hours discharge
8 hours charge
8 hours cool-down
Tubular-LM™ Low Maintenance batteries are designed and built to deliver 80% of their rated capacity
at 77 °F (25 °C) each cycle.
5. TEMPERATURE
In the operation of motive power lead acid batteries, the electrolyte temperature must not exceed 110
°F (43 °C). If the battery is continuously operated at or above this temperature, the service life of the
battery will be severely diminished. Under normal operating conditions, battery electrolyte temperature
should be maintained between 60-100 °F (15-38 °C). Following charging, the battery should be
allowed to cool-down or rest approximately 8 hours prior to another discharge cycle.
If a battery is ever hot to the touch, allow it to cool to room temperature before charging or discharging.
If a battery consistently operates at high temperatures greater than 100 °F (38 °C), contact your local
GNB representative for service.
6. CHARGING
When recharging a fully discharged battery, the starting charge rate will be 3 times higher than the
finish charge rate. The charge rate should taper down to the finish rate by the time the battery is 85%
charged and may be even lower when fully charged. High “on charge” temperatures or frequent need
for water additions are indications of overcharging. Short running times and/or low end-of-charge
specific gravities may indicate inadequate recharge. Consult your local GNB representative on specific
charging problems.
The ampere-hour rating of the charger applied to the battery should be within 10% of the ampere-hour
rating of the battery.
DO NOT INTERMITTENTLY CHARGE, "OPPORTUNITY CHARGE",
OR SHORT CYCLE THIS BATTERY.
Page 3