SWMBO uses a little power scooter for supermarket shopping. It's an Aquasoothe and it has a maxi-battery pack taking 2 12V SLA batteries. E.g.
I bought a pair last June. Fitted them, and coupled them up to the intelligent charger.
Scooter probably gets about 1Km use a week. I tend to bring the battery in and charge it, leaving it on charge until next use.
We've now noticed the battery life has fallen dramatically to the extent of almost giving up after 800, 900m (stated range should be 4-5 miles).
Not being that blessed with test equipment (multimeter), are there any simple checks I can make ?