Ask any mobility workshop what they replace most, and the answer is batteries. Ask how many of those failed early because of how they were charged, and the honest answer is: most of them.

The good news is that battery care is genuinely simple. There are about six things that matter, and none of them are difficult.

The six rules

1. Charge after every use — not when it's flat

This is the big one, and it's the opposite of what people expect. The batteries in most mobility scooters are lead-acid or AGM, and unlike an old phone battery, they do not benefit from being run down before charging. Deep discharges shorten their life.

Plug it in when you get home, every time, even if you only went to the postbox. Little and often is exactly right for this type of battery.

2. Give it a full charge

A full charge from low is typically 8 to 12 hours. Repeatedly unplugging after an hour or two keeps the batteries in a permanently part-charged state, which sulphates the plates and permanently reduces capacity.

Modern chargers switch to a trickle or float mode when full, so leaving it on overnight is normally fine — check your handbook, and use the charger that came with the scooter.

3. Never store it flat

Leaving a scooter with flat batteries in a shed for the winter will ruin them, sometimes in a matter of weeks. It's the most expensive mistake in this article and the most common.

If the scooter is going unused, charge it fully first, then top it up at least once a fortnight. A battery left sitting will self-discharge even with nothing switched on.

4. Charge somewhere dry and not freezing

An unheated shed or garage in January is a poor place to charge. Cold batteries charge badly and hold less. If you can, bring the batteries — or the whole scooter, if it's a folder — indoors to charge.

Charge somewhere ventilated, and don't cover the charger. They get warm, and they're designed to.

5. Use the right charger

Use the charger supplied with the scooter. Chargers are matched to battery type, voltage and capacity, and a mismatched one can undercharge, overcharge or damage the pack. Cheap replacements bought online are a recurring cause of workshop visits.

If your charger is lost or damaged, ring us with the make and model and we'll tell you what the correct replacement is.

6. Expect less in winter

Cold weather reduces available capacity — sometimes significantly. A scooter that comfortably did your usual round trip in July may struggle in January. That isn't necessarily a fault. Plan shorter trips in cold weather, and keep the batteries topped up.

If your range has dropped by a third and you've started planning your day around it, don't wait for a breakdown. That's a battery test, and it takes minutes.

How long should batteries last?

It depends enormously on use and care, but as a rough guide, well-treated scooter batteries commonly give somewhere between eighteen months and three years of regular use. Poorly treated ones can be finished inside a year.

Batteries are also replaced as a matched pair — never one at a time. A new battery paired with a tired one drags the new one down to match it, so you'd be paying twice.

Warning signs

  • Range has dropped noticeably compared with a few months ago.
  • The gauge falls quickly at first, then sits low for the rest of the trip.
  • The scooter slows badly on hills it used to manage.
  • The gauge shows full immediately after a short charge — usually a sign the batteries can no longer hold much.
  • A charge that used to take ten hours now finishes in three.
  • Any swelling, leaking or a strong smell — stop using it and call us.

A note on lithium batteries

Lightweight folding scooters increasingly use lithium batteries. They behave differently: they don't mind partial charges, they're much lighter, and they generally last longer. They also have their own rules — particularly around air travel, where airlines have specific requirements and you must check with the airline in advance.

Follow the manufacturer's guidance for lithium packs rather than the lead-acid advice above, and never use a damaged lithium battery.

Get them tested

We test the batteries on every service. It's part of the standard service test sheet, not an extra. If they're on the way out you'll know before you're stuck somewhere, which is the whole point.

We service all makes and models, not just the ones we sell, and we offer pickup and return — we'll collect the scooter and bring it back to you. A loan scooter may be available while yours is with us, subject to availability.

Call 01234 267393 to book, or read more about what's included in a service.