2500A 12/24V LITHIUM JUMP STARTER POWER
PACK
MODEL NO: SL34S
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
IMPORTANT: To reduce the risk of a battery explosion, follow these instructions and those published by the battery manufacturer and the
manufacturer of any equipment you intend to use in the vicinity of the battery. Remember to review warning marks on all products and on
engines. Modern vehicles contain extensive electronic systems. Check with the vehicle manufacturer for any specic instructions regarding the
use of this type of equipment on each vehicle. No liability will be accepted for damage/injury where this product is not used in accordance with
all instructions.
1.1. SAFETY INSTRUCTIONS
9 Read instructions carefully before using this product.
9 The product is only to be used to start 12V and 24V vehicles. It may lead to damage or be dangerous if used for other different
voltage rated machines.
9 This product is not intended to be used as a replacement vehicle battery.
9 Ensure the vehicle’s battery terminals are clean and battery clamps are connected properly before jump starting the vehicle. Dirty or
corroded on battery terminals may effect the starting performance.
8 DO NOT crank the engine for more than 3 seconds at a time. The jump start feature is designed for short term operation only.
Operating the jump start feature for more than 3 seconds may cause damage to the unit. Allow the jump starter to cool down for
at least 2 minutes after each cranking.
9 Remove the battery clamps from the vehicle battery immediately after the engine has started.
9 Wear safety eye protection and protective clothing. Avoid touching eyes while working with a battery.
9 Wash immediately with soap and water if battery acid contacts skin or clothing. If acid enters eye, ush eye immediately with cool,
clean running water for at least 15 minutes and seek immediate medical attention.
9 If the internal battery is leaking do not use and have battery replaced immediately. Isolate the spillage and clean appropriately.
WARNING!: Battery acid can cause skin damage/burns, respiratory issues, eye damage and throat irritation so please ensure all
precautions are taken place.
9 Remove personal metallic items such as rings, bracelets, necklaces and watches.
9 Keep the unit in good working order and condition. Replace damaged parts immediately.
9 Use only recommended parts. To use unapproved parts may be dangerous and will invalidate your warranty.
9 The unit must only be opened and checked by qualied service personnel. DO NOT disassemble the unit for any reason.
8 DO NOT modify the product.
9 Keep children and unauthorised persons away from the work area.
9 Keep work area clean and tidy and free from unrelated materials. Ensure that there is adequate lighting.
9 If the unit receives a sharp knock or blow, it must be checked by a qualied service agent before being used.
9 Children from age 8 years and above, persons with reduced physical, sensory, or mental capabilities those with lack of experience
and knowledge can use the appliance, if they have been given supervision or instruction concerning use of the appliance in a safe
way to understand the hazards involved.
8 Children shall NOT play with the appliance
9 Cleaning and user maintenance on the appliance shall not be made by children without supervision.
9 The appliance shall be disconnected from its power source during service and when replacing parts and, if that the removal of the
plug is foreseen, it shall be clearly indicated that the removal of the plug has to be such that an operator can check from any of the
points to which he has access that the plug remains removed.
8 DO NOT smoke or allow a spark, or ame in the vicinity of the battery or engine.
8 DO NOT drop any metal item onto the battery as it may spark or short circuit the battery, which could cause an explosion.
SL34S Issue 2 08/08/24
Original Language Version
© Jack Sealey Limited
Refer to
instructions
Electrical
shock
hazard
Wear eye
protection
Wear protective
gloves
Warning
corrosive
substance
Warning:
explosive
material
Keep away
from sources of
ignition
Use in well
ventilated areas
Keep in dry area
protect from rain
Original Language Version
© Jack Sealey Limited
8 DO NOT use unit to recharge dry cell batteries that are commonly used with home appliances.
8 DO NOT charge or boost a frozen battery.
8 DO NOT use attachments other than those recommended.
8 DO NOT pull or carry the unit by its cables and DO NOT pull the negative and positive clamps from the battery terminals.
8 DO NOT operate in vicinity of ammable liquids, dusts or gases.
8 DO NOT recharge the unit with a charger / cables that are damaged. Replace immediately. Only use the correct, supplied charger to
recharge the unit.
8 DO NOT use this product to perform a task for which it is not designed.
8 DO NOT store the unit in damp or wet locations or where the temperature may exceed 50°C.
8 DO NOT submerge the unit in water.
8 DO NOT use whilst under the inuence of drugs, alcohol or intoxicating medication.
8 DO NOT leave the unit in a totally discharged state for an extended period of time as this may result in permanent damage.
8 DO NOT cross-connect the power leads from the jump starter to the battery. Ensure that positive is to positive and negative is to
negative.
9 Ensure that the unit is fully charged before storage. Keep the unit fully charged on a regular basis.
1.2. ELECTRICAL SAFETY (with respect to mains chargers)
WARNING! It is the user’s responsibility to check the following:
9 Check all electrical equipment/appliances to ensure they are safe before using. Inspect power supply leads, plugs and all electrical
connections for wear and damage. Sealey recommend that an RCD (Residual Current Device) is used with all electrical products.
Electrical safety information. It is important that the following information is read and understood:
9 Ensure that the insulation on all cables and on the appliance is safe before connecting it to the power supply.
9 Regularly inspect power supply cables and plugs for wear or damage and check all connections to ensure that they are secure.
Important: Ensure that the voltage rating on the appliance suits the power supply to be used and that the plug is tted with the
correct fuse.
8 DO NOT pull or carry the appliance by the power cable.
8 DO NOT pull the plug from the socket by the cable.
8 DO NOT use worn or damaged cables, plugs or connectors. Ensure that any faulty item is repaired or is replaced immediately by a
qualied electrician.
9 If the cable or plug is damaged during use, switch off the electricity supply and remove from use.
9 Ensure that repairs are carried out by a qualied electrician.
9 Ensure that the insulation on all cables and the product itself is safe before connecting to the mains power supply.
9 Ensure that cables are always protected against short circuit and overload.
2. INTRODUCTION
Powered by Li-ion technology and fully protected against reverse charging and overload. A dedicated 12/24V jump starter pack that
benets from being a compact, lightweight unit that also provides high amperage output peaking at 2500A. Capable of starting 12/24V
vehicles up to 350HP. Featuring a force start function which allows you to boost discharged batteries as low as 0 volts. Includes an integral
1W worklight for use at night with three different settings. Fitted with a 36,400mAh @ 3.7V battery and two USB (5V ⎓ 1A and 5V⎓ 2.4A)
outlets, this unit can be used as a power bank to charge phones, tablets and laptops. 4-Stage LED battery level indicator showing the
capacity. Supplied with both mains charger and USB charging lead.
3. SPECIFICATION
4. CONTENTS
SL34S Issue 2 08/08/24
Model No: SL34S
Voltage: 12/24V
Battery: 3.7V 36.4 Ah Li-ion
Input: 29V 5A
USB-C: 5V 2A, 9V 2A
Peak Amps: 2500A
CCA (Cold Cranking Amps): 800A
USB-A Output X2: 5V 2.4A,5V 1A
Light: 1W
Weight: 2.6kg
Charger
Input: 230V-50hz
Output: 29V 2A
Plug Type: 3-Pin BS
Original Language Version
© Jack Sealey Limited
5. CONTROL PANEL
6. OPERATION
6.1. BATTERY STATUS
6.1.1. Press any buttons. The Internal Battery Level Indicator LEDs will illuminate to indicate battery capacity level.
6.1.2. During the charging, the indicator LEDs will be ashing and solid on one by one. When the battery is charged to a level, the
corresponding indicator LED will be solid on and next level LED will be ashing until all four indicator LEDs are solid on, then lights off,
indicating the end of charging.
6.2. RECHARGING
6.2.1. This product is built with two input ports, a 29V DC input port and a USB-C input port.
6.2.2. Fast Charge: Connect the 29V AC adaptor (included) to 29V DC input port.
6.2.3. Slow Charge: Connect the USB-C cable to the unit’s USB-C input port, then connect the other end of the USB-C cable to any powered
USB power port, such as a USB wall charger or USB car charger (not included).
▲ IMPORTANT
6.3. Please charge only at ambient temperatures between 0°C and 45°C.
6.4. The two input ports don’t support charge at same time, the 29V DC input is priority. Recharge battery after each use or at least every 6
months when in storage to prolong battery life and keep the unit ready for use.
6.5. USB POWER
This product is equipped with two USB-A output ports, they are ideal for charging portable electronic devices, such as smart phones,
tablets etc.
6.5.1. Connect device(s) to USB output port(s) using a matched USB charge cable.
6.5.2. Press any buttons to turn unit on and activate USB power.
SL34S Issue 2 08/08/24
1. Battery Clamps 7. Flashlight Button
2. LED Flashlight 8. 12V Override Button
3. Battery Level Indicator 9. 24V Override Button
4. Warning Light 10. 29V5A DC Input Port
5. 12V Mode Indicator 11. USB-C Input Port
6. 24V Mode Indicator 12. USB-A Output Port
Battery Level Indicator 25%LED Flashing 1LED solid On 2 LEDs solid On 3 LEDs solid On 4 LEDs solid On
Battery Level
0% ≤25% ≤50% ≤75% ≤100%
Original Language Version
© Jack Sealey Limited
6.6. LED FLASHLIGHT
6.6.1. Press ashlight button to activate the LED ashlight. Keep pressing the button to cycle through the four options.100% Strobe SOS Off.
6.7. JUMP START VEHICLE
6.8. IMPORTANT
8 DO NOT attempt to jump start an engine if the battery level has 25% indicated.
6.8.1. This product is built with 12V and 24V two modes for 12V and 24V platform vehicles. Always make sure the unit is on correct mode to
match vehicles, 12V mode for 12V vehicles, 24V mode for 24V vehicles.
8 DO NOT crank the engine for more than three seconds at a time. The jump start feature is designed for short term operation only
operating the jump start feature for more than three seconds may cause damage to the unit. Allow the jump starter to cool down for at
least two minutes after each cranking.
6.8.2. Press any button to turn the unit on and check the battery level indicator. If less than 25% recharge the unit before attempting a jump
start.
6.8.3. Connect the red clamp to the POS “+” terminal of the vehicle battery.
6.8.4. Connect the black clamp to the NEG “-” terminal of the vehicle battery.
6.8.5. Check the 12V and 24V mode LEDs, and warning light on unit, then proceed accordingly.
6.9. USING OVERRIDE MODE
6.9.1. This product has an OVERRIDE feature which allows you to force ON the jump starter function, allowing you to boost discharged
batteries as low as 0 volts.
WARNING! USE THE OVERRIDE MODE WITH EXTREME CARE
6.9.2. Both the spark proof and reverse polarity protection feature are disabled.
6.9.3. Pay very close attention to the polarity of the battery before using this mode.
8 DO NOT allow the positive and negative battery clamps to touch or connect to each other as the product will generate sparks.
8 DO NOT connect 12V vehicle if the 24V OVERRIDE mode activated.
8 DO NOT connect 24V vehicle if the 12V OVERRIDE mode activated.
6.9.4. This mode uses very high current that can cause sparks and high heat if not used properly.
6.9.5. If you are unsure the vehicle battery system is 12V or 24V, please seek the vehicle service or professional for help.
6.9.6. If you are unsure about using this mode, do not attempt and seek professional help.
6.9.7. ENSURE CORRECT POLARITY (red clamp to POS “+” terminal of the battery and black clamp to the NEG”-”terminal of the battery).
6.9.8. ENSURE your vehicle battery system is 12V or 24V, then press and hold the 12V or 24V Mode button two seconds accordingly.
6.9.9. The 12V LED or 24V LED will be solid on, the OVERRIDE mode is enabled.
6.9.10. Proceed with jump start attempt within the thirty seconds.
NOTE: the OVERRIDE mode will only be active for thirty seconds. Once thirty seconds has passed, the jump starter will reset.
7. TROUBLESHOOTING
SL34S Issue 2 08/08/24
LED STATUS DESCRIPTION ACTION
12V LED or 24V LED ashing or solid On. Good connection. Proceed with jump start.
RED warning light solid On Connections are reversed. Reconnect the clamps connections
correctly.
12V and 24V LEDs ashing at same time. Vehicle battery is low, the unit can not
identify the vehicle battery system is
12V or 24V.
OVERRIDE mode will be required. See
USING OVERRIDE MODE.
No LEDs lights on. No connection detected:
1. Poor connection between clamps
and battery terminals.
2. Vehicle battery voltage extremely
low.
Check to ensure a clean and good
connection between the battery clamps
and battery terminals. If after checking
that the clamps have a good connection
and that both LEDs are OFF, then use the
OVERRIDE mode.
Problem Possible Cause Solution
The unit does not operate by
pushing any button.
Over-discharge protection may be
activated.
Please recharge the jump start. If the jump start fails to
work after recharging contact your Sealey stockist.
No power output. No power from AC adaptor or USB port.
Faulty USB
Cable.
Please change AC adaptor or plug in to a different USB
outlet Replace USB cable. If still unable to charge the unit,
please contact the Sealey stockist.
The 12V LED light ashing or solid
on but it still unable to jump start the
vehicle.
The vehicle battery system is 24V, but the
battery
Voltage dropped in 12V.
Mechanical issue with vehicle.
ENSURE your vehicle battery is 24V, if Yes, you can use
24V OVERRIDE mode. Please see USING OVERRIDE
MODE. Consult with your Sealey stockist.
RED warning light ashing. Over-temperature protection is activated. Stop to use and wait the unit cool down.
The 25%/50%/75% three LEDs
ashing together when recharging
the unit.
Internal battery temperature is too low,
DO NOT try and recharge.
Move to room temperature area, and recharge it after the
internal battery has warmed up
25%/50% two LEDs or
50%/75% two LEDs ashing
together when recharging the unit.
The AC adaptor is not of the original
specication and not compatable with the
unit.
Please use the original AC adaptor or use a genuine
replacement part to charge the unit.
25% one LED fast ashing Internal battery over-discharged. Please contact your Sealey stockist.
Original Language Version
© Jack Sealey Limited
8. TOXIC AND HARMFUL SUBSTANCES
9. MAINTENANCE
9.1. When the battery charger is not being used, it must be stored in a dry place to protect it against humidity. Use a soft cloth to clean its
outer casing.
SL34S Issue 2 08/08/24
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 sales@sealey.co.uk www.sealey.co.uk
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts
without prior notice.
Important: No Liability is accepted for incorrect use of this product.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
REGISTER YOUR
PURCHASE HERE
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to
a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids
according to local regulations.
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
Parts support is available for this product. To obtain a parts listing and/or diagram, please log on to www.sealey.co.uk, email sales@sealey.co.uk
or telephone 01284 757500
BATTERY REMOVAL
Under the Waste Batteries and Accumulators Regulations 2009, Jack Sealey Ltd are required to inform potential purchasers of products
containing batteries (as defined within these regulations), that they are registered with Valpak’s registered compliance scheme. Jack
Sealey Ltd’s Batteries Producer Registration Number (BPRN) is BPRN00705.
