Electric wheelchair batteries

Most electric wheelchairs run on two 12 V batteries wired in series to give 24 V. Their capacity decides how far you travel on each charge and how the chair copes with slopes.

Here you will find AGM and GEL deep cycle blocks for wheelchairs and mobility equipment, each listed with capacity, weight, dimensions and terminal type so you can match your current pair.

Capacity, range and tray space

Lightweight and folding chairs usually take 12 V batteries between 12 and 40 Ah; indoor-outdoor models with stronger motors move up to 50, 60 or 80 Ah. More amp hours means more range, but also more weight and a bigger case, so the battery compartment is the real limit. Measure it and compare length, width and height before going up in capacity. Check the terminals too: many wheelchair batteries use M5 or M6 threaded posts, and the positive must sit on the same side as the original so the cables reach without strain. If you are replacing the pack of a scooter instead, see our mobility scooter batteries.

AGM or GEL for a wheelchair

Both are sealed, cannot spill and never need water. GEL copes better with deep daily discharges and tends to deliver more cycles when the chair works hard. AGM handles current peaks more easily and performs well under moderate use. What really matters is that the wheelchair charger uses the right curve for the chemistry; when switching from AGM to GEL, check that setting.

Brands with a strong mobility focus include MK Battery and DEKA, both with AGM and GEL ranges made for this job. For other slow-discharge uses, browse all our deep cycle batteries.

FAQ

Do I need to replace both batteries together?

Yes. They work in series and a new one would be dragged down by the old one. Always fit a matched pair of the same model.

How often should I charge the wheelchair?

At the end of every day of use, even after a short trip. Lead-acid lasts longer when it is never left flat for days.

Can I fly with my powered wheelchair?

Sealed AGM and GEL batteries are generally accepted as non-spillable, but each airline sets its own rules. Check with them before booking and keep the datasheet with you.