How to charge vrla batteries

Written by mary lougee
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How to charge vrla batteries
Electric wheelchairs use sealed VRLA batteries for their power. (man in wheelchair image by jimcox40 from

Valve-regulated lead acid, or VRLA, batteries are sealed batteries without caps that open on each cell. The electrolyte solution inside of the battery has a gel in it to keep the fluid thick. This type of battery is used in golf carts, wheelchairs and scooters to minimise the risk of acid spilling out when the vehicle tilts or turns over. VRLA batteries are rechargeable and require a specific battery charger. Items that use VRLA batteries for their power usually include a charger for them with the purchase.

Skill level:

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Things you need

  • Appliance battery charger
  • or
  • VRLA battery charger

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  1. 1

    Turn the device off and park it.

  2. 2

    Plug the included battery charger into an electrical socket.

  3. 3

    Insert the battery charger cord into the device. You may need to remove a panel or open a door to access the battery-charging harness on the item.

  4. 4

    Turn the device on to check the battery level if there is an indicator. Some items have a low-battery light that turns off when the battery has a sufficient charge and illuminates a green light.

  5. 5

    Unplug the battery charger cord from the device and replace a panel or close a door to the charging harness.

  6. 6

    Unplug the battery charger power cord from the electrical socket.

  1. 1

    Turn the device off and park it near the battery charger.

  2. 2

    Plug the battery charger power cord into an electrical socket. Open a door or remove a panel to gain access to the battery terminals.

  3. 3

    Place the negative (black) battery clamp on the negative battery terminal. Place the positive (red) battery clamp on the positive battery terminal.

  4. 4

    Turn the battery charger to the VRLA setting on the dial. Turn the charger on. The battery charger will stop charging when the battery is full and indicates a full charge on the display.

  5. 5

    Remove the positive and negative charger clamps from the VRLA battery and unplug the charger. Replace any panels or close doors to secure the batteries in the device.

Tips and warnings

  • Devices that use VRLA batteries and are in use daily should be charged each night. The battery takes approximately eight hours to charge fully.
  • Do not use a VRLA battery charger on VRLA batteries for acid batteries such as car batteries. The VRLA charger supplies electricity at a much lower rate than a traditional battery charger.

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