Battery Pack Protection
To maximize performance and battery life, the Lithium-
Ion battery's protection circuit monitors battery voltage,
discharge amperage and temperature. When the battery
voltage falls below the usable range, the battery will shut
off, and the 1st LED will flash for ten (10) seconds. The
battery needs charging. If the battery's discharge
amperage limit is reached, due to excessive load, the
protection circuit will shut down the tool and the
illumination LED will remain on until the trigger is
released. Tool operation can be resumed immediately.
Cold Weather Operation
The Lithium-Ion battery can be used in temperatures
down to -4°F(-20°C). When the battery pack is very cold,
run the tool at no load to warm battery and then use the
tool normally.
Hot Weather Operation
If the Lithium-Ion battery temperature reaches
158°F(70° C), the protection circuit will turn off the
battery and all four LED's will flash for four (4) minutes.
Once the battery has cooled down below 149°F(65°C),
the battery will resume normal operation.
Storage
Do not expose your battery pack to water or rain; this
could damage the battery pack.
Fully charge the battery before placing it in storage. For
optimum life, store the all Lithium-Ion batteries at room
temperature away from moisture. Permanent capacity
loss can result if batteries are stored for a long period at
high temperature, over 120°F(49°C).
Maintenance
Service
Service of a tool requires extreme care and knowledge.
Service should be performed only by a qualified service
technician.
• Always check tool for damaged parts before use.
• Replace or repair damaged parts before use. Check
alignment of moving parts. Binding of moving parts or
broken parts may alter operation.
ZCDR8850HCE Rev. D
• Have damaged parts properly repaired or replaced by an
Authorized Service Center.
• Do not use tool if switch does not turn it on and off.
• Maintain tools. Keep tools dry, clean and free of oil and
grease for better and safer performance.
• For the location of the nearest Snap-on repair center, call
Snap-on customer service at 1-877-762-7664.
• When charging or discharging a lithium-ion battery over
a short period of time, the internal temperature of the
battery pack increases substantially. This is normal.
• Under ideal working conditions the useful life of a lithium-
ion battery pack is around 1000 charge/discharge cycles.
Improper care and maintenance shortens battery life and
the amount of time the battery holds a charge.
• Use only with Snap-on charging equipment that
specifies a CTB series battery pack.
• Avoid short circuiting the battery pack. Permanent
damage to the pack can occur from high current
discharge.
WARNING
• Unplug charger from outlet before starting the
disassembly procedure.
• Remove the battery pack from the tool before starting
the disassembly procedure. Short-circuiting the
battery pack can cause fire or personal injury.
• Use safety equipment. Always wear eye protection.
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