: Includes double fuse protection, thermal overload protection, and reverse polarity protection. Operating Instructions Old Car Battery Charger - How to use it? | DIYnot Forums
Attach the clip to the negative battery terminal (or a metal ground point on the vehicle chassis if the battery is still installed). Charging: Plug the charger into the mains power.
Connect the red (+/Positive) crocodile clip from the Selmar charger to the positive post of the battery. selmarturbo4batterychargerinstructions link
Wear ANSI-approved splash-resistant safety goggles and gloves when handling battery acid.
The charger has safety fuses to protect against errors. If the charger stops working, check the internal/external fuses. Charging: Plug the charger into the mains power
Incorrect connection sequences can cause massive sparks, blowing the internal charger fuses or damaging the battery.
| | Good (Normal Operation) | Bad (Potential Issue) | What to Do | | :--- | :--- | :--- | :--- | | Ammeter Needle | Gradually decreases from 4A to nearly 0A as the battery charges. | Needle does not move, stays at 0A, or is pegged at maximum. | Check cable connections. If still 0A, check fuses or battery voltage. | | Battery | Stays cool or slightly warm to the touch. | Becomes very hot to the touch, or you see fluid boiling inside the vents. | Immediately stop charging. The battery may be failing or is shorted. Replace it. | | Indicator Lights | The mains power light (red) is on. The "charging" lights are illuminated as expected. | No lights come on at all, or the "fully charged" light comes on immediately for a dead battery. | Check mains outlet, plug fuse, and internal charger fuses. | | Physical Condition | Casing is intact, cables are flexible, and clips have good spring tension. | Casing is cracked, cables are frayed or stiff, or clips are loose and corroded. | Do not use. Repair or replace damaged parts before attempting to charge. | The charger has safety fuses to protect against errors
Understanding your charger's precise parameters ensures you do not overload its electrical transformer or damage smaller powersport batteries. Specification Details Selmar Turbo 4 (SG4A) Input Voltage ~230V AC, 50Hz (Standard UK/EU Mains) Output Voltage 12V DC Nominal Output Current 4 Amps Peak / 2.7 Amps RMS Continuous Compatible Batteries Flooded Lead-Acid, Maintenance-Free, Sealed Lead-Acid (SLA) Incompatible Chemistries NiCad, NiMH, Lithium-Ion, Dry Cell (AA/AAA) Enclosure Material High-impact, flame-retardant composite Display Panel Analog moving-arm Ammeter Safety Features
The is a robust, portable device designed for charging 12V lead-acid batteries commonly found in cars, motorcycles, and small vans. Featuring a flame-retardant case and a 4-amp charging rate, it is an ideal tool for home maintenance and emergency recovery of flat batteries. Essential Safety Precautions