FEATURES
Designed for charging all types of 12V
lead-acid batteries including; Wet (Flooded),
Gel, MF (Maintenance-Free), CA (Calcium),
EFB (Enhanced Flooded Battery), and AGM
(Absorption Glass Mat) batteries
Suitable for charging battery capacities
from 2 to 400Ah and maintaining
all battery sizes
15A booster enables a fast charge
within 300 seconds
Temperature controlled
Supplied with 1.7 meter DC and 0.5 meter
battery clamp connectors
www.jeffersontools.com
User Manual
v.1.1
JEFBATCHG15-12
1. SAFETY
WARNING:
The user must read and
understand all of the product
safety information prior to using
the JEFBATCHG15-12
Dynamo 15A Battery Charger - 12V.
• The JEFBATCHG15-12 has been designed
for charging all 6V and 12V lead-acid
batteries including; Wet (Flooded), Gel,
MF (Maintenance-Free), CA (Calcium),
EFB (Enhanced Flooded Battery), and AGM
(Absorption Glass Mat) batteries.
• Do not use this product to charge any
products outside of it's intended use.
• Before using the charger carefully read the
battery manufacturers specification,
precautions and recommended rates
of charge. Jefferson do not assume any
liability for misuse of this charger.
• Batteries contain explosive gases. Charging
should be carried out in a well ventilated
area and cool area away from sources of
heat flames and sparks.
• Indoor use only. This charger must not be
used outside in rain or snow conditions.
• Disconnect the mains cable. Before making
or breaking the connection to the battery
terminals, remove the plug from
the power supply.
• Connect the charger carefully. Make sure
the red clamp is attached to the battery
positive terminal. The black clamp attaches
to the negative. Do not reverse the clamps
or allow them to touch each other.
JEFBATCHG15-12
• Refer to the vehicle manufacturers
information. Follow these instructions fully
to make sure no damage occurs to the
vehicle or it’s equipment.
• Do not cover the charger. Allow air to
circulate around the charger to prevent
over heating.
• The charger is equipped with a time-lag
fuse inside. Over-heating will trip the fuse to
prevent damage and will not reset until
sufficiently cooled.
• Do not use the charger within the vehicle.
Stand it on a level firm surface to prevent
damage to the charger or vehicle.
• Do not tamper with this product. Repairs
and maintenance must be carried out by an
authorised service agent. Do not modify
this product in any way.
• Wear approved safety goggles (not safety
glasses) and latex/nitrile gloves. Before
charging a maintenance type battery the
electrolyte (battery acid) must be filled to
the maximum marked levels. Never use tap
water. Distilled water or electrolyte
must be used.
• Never attempt to charge non-rechargeable
batteries. Only charge lead acid batteries
within the voltage and amp hour capacities
of the charger.
• Never attempt to charge a frozen battery.
• Never attempt to charge a damaged or
distorted battery.
• Keep out of the reach of children.
12V
Battery Charger
2. INCORRECT POLARITY WARNING
3. CHARGING MODES
When the error LED warning is flashing,
it denotes a potential error in the
battery conditioner.
Several potential errors include;
1. Battery is not connected
2. Battery voltage is too low
3. Battery is connected incorrectly
Note:
A buzz alarm may sound when the
temperature inside the charger is too high.
After the internal temperature reduces,
the charger will begin charging again.
The Jefferson JEFBATCHG15-12 Dynamo
15A Battery Charger - 12V, has seven modes:
Standby, 12V/2A, 12V/6A, 12V/10A, 12V/15A,
BOOST and SUPPLY. Do not operate the
charger until you confirm the appropriate
charge mode for your battery.
Using 12V BOOST Charge
To operate BOOST, the charger must be
connected to a 12V lead-acid battery with
the battery clamps connected. For optimal
results, allow BOOST to complete the 5
minute charge. After the 300 second boost,
the digital display will show "000" and you are
ready to start your vehicle (whether FULL light
is illuminated or not). If unseccussful when
starting your vehicle, let the battery rest for 15
minute and try boost again. Most vehicles will
start with one boost. Do not use the BOOST
feature more than twice within a 24 hour
period. If two boosts cannot successfully start
your vehicle, replace your vehicle battery.
Please note this is not a jump start device!
