Maintaining your vehicle’s computer settings while disconnecting the battery is crucial, and an OBD2 memory saver is the tool for this job. However, using the wrong equipment can lead to serious problems. It’s tempting to reach for a powerful jump starter, but when it comes to the Best Obd2 Memory Saver practices, prioritizing safety with low current is paramount.
The Danger of High Current Memory Savers
Using a high current power supply, like a jump starter intended to crank an engine, directly into your OBD2 port is a recipe for disaster. Batteries can explode if short-circuited, and the intense heat generated poses a significant burn risk. Even a momentary accidental ground can cause severe damage. These high-amperage devices are simply not designed for the delicate electronics of your car’s OBD2 system.
The Safe Approach: Low Current Battery Chargers
For safely preserving your car’s memory, a low current battery charger is the ideal choice. A charger with a maximum output around 3.5 amps, or even as low as 1 amp, is perfectly sufficient. These low current options, such as the NOCO G3500 or similar trickle chargers, provide enough power to maintain settings without the risk of overpowering the system. If a short circuit occurs with a low current supply, the voltage will simply drop, preventing damage and ensuring safety.
Understanding OBD2 Port Power and Tool Compatibility
It’s important to understand that devices like the NOCO GB40, designed as jump starters with high amperage output, are not suitable as OBD2 memory savers without extreme caution and understanding of their override functions. These devices are designed to detect a battery and deliver a significant current, which can be dangerous when connected directly to the OBD2 port. Furthermore, many OBD2 ports are protected by a 7.5 amp fuse. While blowing this fuse might not disable the entire system, it indicates a problem and potential risk.
Conclusion: Prioritize Safety with the Right OBD2 Memory Saver
When selecting the best OBD2 memory saver, always prioritize safety. Opt for a low current battery charger to avoid the risks associated with high amperage jump starters. Using the right tool ensures you protect your vehicle’s electronics and your own safety. Always double-check your connections and consider using a voltmeter to confirm proper voltage at the battery terminals and OBD2 port for added peace of mind.
