How to Use Battery Repair Solution?
4 Answers
Non-metallic tools such as syringes or plastic funnels. Open the vent valves of the lead-acid battery. Vent valves can generally be divided into two types: one is the pry-open type, which requires a sharp tool to pry open, and the other is the screw-open type. Add the repair solution to the battery vent holes according to the specified dosage. If the battery is severely dehydrated, after adding the repair solution, you also need to add replenishment solution until the battery separator is saturated. Install the battery vent caps and let the battery stand for 2 hours before use. The longer the standing time, the better the repair effect will be.
I've seen many experienced drivers repair batteries themselves, and the process is actually quite simple. First, you need to remove the battery and lay it flat, remembering to wear gloves to avoid corrosion. Locate the vent valve or filling holes—some battery caps need to be pried open. Use a syringe to slowly inject the repair solution into each hole until the liquid level just touches the plastic separator. After finishing, don't reinstall it immediately; let it sit for an hour or two to allow the electrolyte to fully penetrate. The first time I did this, I even used a charger to slow-charge it for a full day, and the activation effect was excellent. One important reminder: after topping up the fluid, the battery voltage should stabilize above 13V to be considered successful. If the voltage still drops, you might need to consider replacing the battery. This method is indeed effective for slightly sulfated batteries and can extend their lifespan by a year or two.
Last time my neighbor asked me to help repair the old battery in his car. I told him that the repair fluid mainly solves the problem of sulfation on the electrode plates. It's best to check the battery condition before operation. If it's swollen or leaking, don't bother trying to fix it. When opening the cover, it's better to use a screwdriver to gently pry along the sealing groove, as the plastic on old batteries tends to be brittle. When adding the fluid, make sure to evenly distribute it into each cell. I've seen people use a funnel and end up pouring too much, causing spills everywhere. Actually, the most crucial part is the subsequent charging process, which must be done with a low current for over 12 hours. The next day after the repair, I used a voltmeter to test it, and when the voltage rebounded to 12.8V, it was ready to be reinstalled in the car. This kind of operation can generally improve the battery capacity by about 30%, and it's most effective for batteries within five years of use.
The mechanic at the repair shop told me that the restorative fluid is most suitable for lead-acid batteries. Make sure to operate in a well-ventilated environment, as the liquid is highly acidic. First, clean the surface of the battery, then use a hole opener to drill a small hole in the refill port. The easiest way to add the fluid is with the rubber-tipped dropper that comes with the restorative fluid, filling each hole to about half a centimeter from the top. Be especially careful not to overfill, or it may overflow during charging. Then, cover it with the rubber cap and let it sit for three hours to allow the electrolyte to fully mix. Finally, connect it to a charger and charge at 2A for eight hours, then measure the voltage afterward. I tried this on my motorcycle battery at home, and after charging, it started much more smoothly than before.
