How to Repair a Car Battery?

2 Answers
StJayla
07/25/25 2:10pm
Non-metallic tools such as syringes or plastic funnels. Open the vent valves of the lead-acid battery. The vent valves can generally be divided into two types: one is the pry-open type, which requires using a sharp tool to pry it open, and the other is the screw-open type. Add the repair solution to the battery vent holes according to the recommended dosage. If the battery is severely dehydrated, after adding the repair solution, you also need to add a replenishing solution to the battery's internal separator. Reinstall the battery vent caps and let the battery sit for 2 hours before use. The longer the standing time, the better the repair effect will be.
Was this review help?
1
5
Share
DiGeorge
08/11/25 9:01pm
Actually, there are ways to repair a dead car battery. I've been driving for twenty years and seen many such cases. Usually, when the battery is drained, try fully charging it first with a charger—sometimes it's just depleted from prolonged storage. Also, check the battery terminals for corrosion or looseness. Clean them thoroughly with a toothbrush and soapy water, then apply some petroleum jelly to prevent rust. If it's a liquid-type battery, check the electrolyte level and top it up with distilled water if low, but don't overfill. Once, my own battery kept losing charge, but after cleaning and using a reconditioner, it has worked fine for nearly two years. Avoid leaving electrical devices on overnight when parked to extend its lifespan. Regularly testing the voltage is a hassle-free habit—just get a simple voltmeter to do it yourself.
Was this review help?
16
0
Share
Expand All
More Forum Discussions

What Causes a Car Clutch Pedal to Stay Down When Depressed?

When a car clutch pedal stays down after being depressed, it indicates a clutch system malfunction. Clutch System Malfunctions: This may occur due to incomplete clutch disengagement, transmission control cable issues, or internal gearshift mechanism failures in the transmission. Troubleshooting Methods: First, inspect the clutch pedal return spring for proper function and secure attachment. Hydraulic system air pockets or worn master/slave cylinders may also cause pedal non-return. For air in the system, regularly replace hydraulic fluid and bleed the system. For cylinder wear, replacement is necessary. When depressing the clutch pedal produces noticeable noise upon contact between the release bearing and fork, this indicates bearing issues. Apply grease to the release bearing first; if noise persists, the bearing requires repair or replacement.
3
2
Share

Can You Park in Neutral (N) Gear?

For long-term parking, you can shift to N (Neutral) gear, but you must also engage the handbrake to prevent the car from rolling. P (Park) Gear: The parking gear used when the vehicle needs to be parked for an extended period. R (Reverse) Gear: The reverse gear used when the car needs to back up or park. N (Neutral) Gear: Neutral gear is used when the car needs to coast, wait at traffic lights, or be towed. D (Drive) Gear: The forward gear used when the car is moving forward; this gear is frequently used. L (Low) Gear: The low-speed gear where the transmission stays in first gear, suitable for congested road conditions.
16
5
Share

How many points will be deducted for occupying a bus lane?

Occupying a bus lane is considered driving in a lane not as prescribed, and according to traffic regulations, 3 points will be deducted. First-time offense exemption: The so-called "first-time offense exemption" means that eligible vehicle owners can apply for exemption from fines and point deductions for one road traffic safety violation, and the traffic police department may issue a warning penalty. Traffic violations: Traffic violations refer to actions that violate road traffic safety laws and traffic management regulations. For example, motor vehicles and pedestrians violating traffic management rules and regulations, as well as organizations, groups, enterprises, schools, and other entities or individuals occupying roads without approval from public security authorities for setting up stalls, parking vehicles, stacking materials, building sheds, conducting market trade, and other activities that obstruct traffic are all considered traffic violations.
3
2
Share

Why Can't the Car Door Open After Heavy Rain?

After heavy rain, the car door may not open due to issues with the central locking system, child lock being engaged, or failure of the door lock cable. Central Locking System Issue: The central locking system of the door is activated. When the door won't open, you can first use the car key to unlock it, then lock it again, repeating this twice. Then locate the central lock button on the left front door trim in the driver's compartment, press the unlock button, and check if the door can be opened. Child Lock Engaged: The child lock is engaged. Most vehicle rear doors have a child lock. You will need a flathead screwdriver to turn the child lock to the off position. Door Lock Cable Failure: The door lock cable has failed. If this problem occurs, you can replace the door lock cable.
5
4
Share

How to Check if the Coolant is Sufficient

Methods to check if the coolant is sufficient: 1. Park the car on level ground and wait for the engine to cool down; 2. Put the car in ignition mode; 3. Check the water temperature: Since the cooling system is pressurized, the radiator cap can only be opened after the engine has completely cooled down. The coolant level should be between the upper and lower limits for normal operation. Coolant is a crucial fluid for the engine, serving antifreeze functions while also preventing metal component corrosion and rubber part aging. Additionally, coolant helps prevent and reduce scale formation during circulation. Therefore, it is essential to regularly monitor whether the coolant level is adequate.
6
0
Share

For a manual transmission, should you turn off the engine first or shift to P gear before turning it off?

For a manual transmission, you should shift to P gear before turning off the engine. P gear: Parking gear, used when the car needs to be parked for a long time. R gear: Reverse gear, used when the car needs to park or meet another vehicle. N gear: Neutral gear, used when the car needs to coast, wait at traffic lights, or be towed. D gear: Drive gear, used when the car needs to move forward, this gear is frequently used. L gear: Low gear, this gear keeps the transmission in first gear, suitable for use in congested road conditions.
8
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.