Can I Use a Regular Wall Wart to Safely Charge a 12V SLA Battery?
A regular wall wart is a power supply, not a dedicated battery charger. It does not have charging regulation, so it cannot stop charging. This may risk overheating. You can use it safely if it outputs only 10% of the battery’s capacity. For a 2Ah battery, that means a maximum of 200mA. Always check battery … Read more