Always disconnect the charger from the AC outlet before attaching or removing the DC battery clamps. Stay safe, and keep your battery fully charged
Even with the official instructions, issues occur. Here is a cheat sheet based on the manual’s FAQ. selmarturbo4batterychargerinstructions link
Assuming you have downloaded the manual via the "selmarturbo4batterychargerinstructions link", here is the standard workflow. Always disconnect the charger from the AC outlet
Follow the standard "Red to Red, Black to Black" rule to avoid reverse polarity: selmarturbo4batterychargerinstructions link
: Wear protective gloves and safety glasses. Battery electrolyte consists of corrosive sulphuric acid.
This comprehensive operational guide details everything you need to safely run, read, and maintain your device. Key Specifications & Safety Design