Batteries are the most expensive part you will ever replace on a mobility scooter, and they are the part most often ruined by accident. The good news is that looking after them is genuinely simple — it is one habit, and everything else is detail.
The one rule
Charge it after you use it, not when it gets low.
Mobility scooter batteries are not phone batteries. They do not want to be run down and topped up. They are happiest sitting full. Every time you leave one flat or nearly flat, you take a little capacity away permanently — and leave one flat for weeks and you can lose the battery altogether.
So: come home, plug in. Even after a five-minute trip to the postbox. You cannot wear it out by charging it too often.
Charging, in practice
- Charge after every use, however short.
- Give it a good long charge — overnight is ideal. Modern chargers stop when full.
- Use the charger that came with it. Chargers are matched to batteries; the wrong one can undercharge for years without you noticing, or overheat.
- Charge somewhere dry and ventilated, at room temperature. Not a freezing garage in January.
- Never leave a battery flat overnight, and never store one flat.
If you are not using it for a while
Winter, a spell in hospital, a long holiday — this is when most batteries quietly die.
- Charge it fully before it goes away.
- Top it up at least once a month, more often in cold weather.
- Store somewhere cool and dry, but not freezing.
- If your scooter has an isolator or a removable battery key, use it — a scooter sat switched on will slowly drain itself.
Setting a monthly reminder on a phone or a calendar is the single cheapest thing you can do to protect a several-hundred-pound part.
Why your range drops in winter
It is not your imagination and it is usually not a fault. Cold weather reduces the capacity of any battery — you might see noticeably fewer miles from the same charge on a frosty morning. It comes back when the weather does. Keep the scooter somewhere sheltered overnight if you can, and charge indoors rather than in an unheated garage.
Range is also affected by hills, your weight, tyre pressure and how much stopping and starting you do. The manufacturer's quoted range is measured in ideal conditions — flat, smooth, mild, steady speed — so treat it as a best case rather than a promise.
How long should a battery last?
Looked after, a couple of years of regular use is typical, and many go longer. The signs one is coming to the end:
- The range drops noticeably and does not come back with the warmer weather
- It reaches "full" much faster than it used to
- The gauge falls off a cliff rather than dropping steadily
- The scooter feels gutless on hills it used to manage
Replace batteries in pairs where your scooter has two. Pairing a new battery with a tired one drags the new one down to match.
Worth knowing
- Keep tyres properly inflated if yours are pneumatic. Soft tyres cost you range before the battery ever does.
- Do not open or attempt to repair a battery.
- Old batteries are recycled, not binned. Any battery we supply, we will take the old one away.
- If you are flying, lithium batteries have airline rules of their own — check with your carrier well before you travel.
Not sure what you have?
Ring us free on 0800 593 0400 with your scooter model and we will tell you which batteries it takes and what they cost. Our battery charging guide has more detail.