Hi Vandy, I had a look at mine today in the garage and it's the 900 model and not the 910. I last fully charged it in mid March and it still has a half charge rate showing on the amp meter and you don't need to have it on trickle charge, I just fully charge it a couple of times a year and fully discharge it so that the batteries inside don't lose their memory. I've had mine seven years now and it's been used a lot in winter by very grateful neighbours over the years so it's been a very good purchase and well worth the money I paid for itVandy said:Hi Umbongo
Have just looked at the link and think I may get one of these. Roughly how long do they hold their charge - do you keep yours on trickle charge all the time or how does it work?