How To Charge A Dead Wheelchair Battery

Electric wheelchairs provide critical mobility for many people with disabilities. However, the rechargeable batteries that power them can occasionally go dead. That makes wheelchairs inoperable. Charging a dead battery is daunting and requires certain techniques to turn it back to work. In this article, I will discuss with you the reason for battery damage earlier and the method to charge a dead battery.

4 Methods to Charge A Dead Wheelchair Battery

First of all, make sure your wheelchair battery is dead because there are many more reasons for not turning on the wheelchair. If you are unsure, check it using a multimeter. Moreover, look at the battery indicators. 

Safety Precautions: Choose a well-ventilated area to avoid the build-up of potentially hazardous gases that batteries may emit during charging. Before choosing any of these methods check for any leakage or damage to the battery to determine whether it needs to be replaced. 

Safety Gear: Charging flooded lead acid batteries requires protective equipment like goggles, gloves, and aprons to guard against hazardous leaked fluids if a damaged battery ruptures.

Method 1: Do It Using Compatible Battery Charger

First, you should try to recharge a battery using a manufacturer’s charger that comes with the wheelchair. If you have already tried this method before and it did not work. Then you should check the charger settings to ensure they match the specifications of your wheelchair battery. This includes voltage and charging current settings. 

Consult manufacturer guidelines to match the required charge port, output voltage, and amperage. For example, standard 12V sealed lead acid wheelchair batteries need 12V, 5A smart chargers. Too little/much current risks damage.

Method 2: Use A Pulse Charger

Another method to bring life to a dead battery is by using a Pulse Charger. However, it is not advisable in the first place but it is worth doing. 

Connect the pulse charger in the same way as you do for the standard charger. A pulse Charge is used to deliver the necessary pulse charge. It works by breaking the crystal layer accumulated on the electrodes of the battery. Ultimately it helps to dissolve them and restore their capacity. 

Avoid leaving it for an extended period of time as it can make the battery hot and can affect it. 

Method 3: Use A Jumpstarter

Using a Jumpstarter can bring back your dead battery. It works as a booster and starts the battery by supplying instant power. 

Before using a jump starter make sure you unplug your wheelchair from the wall socket. After doing so, bring a jumpstarter close to your wheelchair battery. If battery nodes are exposed then you can do it without removing the battery from the wheelchair. However, if you can not connect jumpstarters then you have to remove the battery.

Then you can simply attach the red (+ive) end of the jumper with the positive terminal of the battery. While black (-ive) end of the jumpstarter should attach with the pure metal material at the battery or car. Once you start your car, it will pass some juice of power to the dead battery and help it to restore. 

Method 4: Take Professional Assistant 

If you cannot help revive your dead battery by any of these methods or you don’t have enough patience and knowledge. Then the last option is to take a professional service to do it for you.  

So, if you are not sure then it is better to call a professional because you can damage the battery and can face injury.

Method 5: Buying a New Battery

If your wheelchair battery does not get back after any of these methods. If it cannot hold the power for long hours then it’s time to invest in a new one. 

Gilani Engineering has batteries for all kinds of wheelchairs which you can order online or you can visit the Gilani Engineering shop in Sydney to find your desired battery model for your wheelchair.

4 Main Causes of Unexpected Wheelchair Battery Failure

Electric wheelchairs rely on rechargeable batteries to operate, but these batteries can go dead without warning for multiple reasons according to credible experts like medical supplier Numotion. 

Sudden loss of charge leaves wheelchair users stranded until power gets restored. While proper routine care minimizes sudden shutdowns, understanding common root causes makes prevention easier.

Fully Depleting Charge Through Heavy Usage

Wheelchairs typically run anywhere from 10 to 20 miles per charge depending on terrain, passenger weight, speed, and other drain factors. If you push it beyond its typical safe distance limits before recharging it fully expands its capacity. Continue use of the battery causes irreversible harm.

Undercharging of Wheelchair Battery

Another root cause of a dead battery is your habit of charging it. If you don’t allow the battery to charge fully, start using the wheelchair immediately. It causes its cycle depletion earlier and potentially affects the battery. It is recommended to set on a wheelchair when the battery is at least 70 to 80 percent. Low battery power loses earlier and it becomes dead. 

Charging with Wrong Accessories

Each battery has an ideal charging accessory. Using a faulty or mismatched charger ruins the battery and shortens its lifecycle. Always charge your wheelchair battery with the adaptor provided by the supplier.

If you are using the wrong adaptor to charge your battery then I will recommend you to use the correct one or buy one by consulting with the expert.

Initially, it looks fine but over time your wheelchair stops holding full power but indicators show it is fully charged. It goes dead after the use of a few hours than actual use. 

Storing Battey Incorrectly 

All rechargeable batteries slowly lose minor energy over time. Wheelchair non-use over weeks or months allows self-discharge and finally losing remaining current. You know what the exposure to extreme heat or cold accelerates this process. 

Make sure to store it in a safe place where the temperature remains 50 to 60 degrees Fahrenheit. When I store my battery I used to check it periodically and put it on a charge to keep it working. 

Corrosion on Battery Terminals

Carefully diagnose the terminals of a battery and see if there is any corrosion that is hindering the proper flow of electricity to the battery. Further, make sure the battery terminals are connected properly with the wire. Keep them clean and properly maintained to avoid corrosion. 


Properly charging a dead wheelchair battery is essential for ensuring the continued functionality and reliability of the wheelchair. By following the methods outlined above, you can safely and effectively revive a dead battery, enabling them to regain mobility and independence. 

However, it’s crucial to prioritize safety precautions, such as inspecting the battery for damage, using appropriate charger settings, and monitoring the charging process closely. Further, if any of these could not give life to a dead battery then it would be a wise decision to buy a new one.