I purchased a Pronto 41 wheelchair and a Winsunny battery charger. The charger didn't have a manual so I'm wondering what the best procedure is for recharging the batteries. Do I need to turn the wheelchair on when I charge? Should I let the batteries run down before recharging or should I recharge daily? Is there a sequence I should use to plug things in? Thanks.

Joe See my tips on charging batteries No you don't have to leave the chair on when charging. Charge overnite after using it during the day. Always have the charger off when plugging it into the chair and unplugging from the chair. The charger you have doesn't have an on/off switch so get a power strip with the on/off switch, plug that into the wall and plug your charger into the strip use the switch on the strip to turn the charger on and off this will save you having to plug and unplug the charger rom the wall. Always store or put the chair up fully charged. If you don't use the cair daily charge at least once a week. It takes 9-10 chargings to get the batteries operating at 100% so use the chair and charge overnight while you sleep Never leave the charger on the chair more than 12 hours Hope this helps you

The modern chargers for Hoveround that are NOT aftermarket, are all smart chargers. You can just plug them in anytime. I do not unplug the AC nor do you need to turn off the switch on the charger. Just turn off the chair, and plug it in. The LED on the charger will change from green (standby) to red charging. When the charger has fully charged the batteries it then will turn itself off to sleep mode.
About once a month either leave your chair on and allow the batteries to run down to either where the chair shuts off, or to the last 1-2 leds flashing stage. Then do a fully overnight charge. This will keep the batteries in good shape. Do not EVER leave the chair for long time in its uncharged state if at all possible The lead acid and/or Gel cell batteries want to bwe fully charged as much as possible but you need to exercise them to obtain max battery life. The smart charger simply cannot overcharge so leaving it connected 24/7 when the chair is not in use, is really just fine. If the charger is taking a very long time to charge them or the chair has very short range, then its time to replace the batteries period. Wheelchair batteries depending on your usage will only last 6 months to a year, although many push them to as much as 5 years.