I've had my Botvac
75 (Bertie) for 13 months now and I typically run him two or three times per week. A run in this particular case requires a charge part way through to complete the cleaning task. I don't use the schedule timer to start it off - I prefer to start it manually when I know the house is staged ready for Bertie to do his thing and not get caught on anything.
Lately it has started to report the famous "Please open my dirt bin & push switch DOWN to ON" message when I try to start him off. This doesn't happen every time but it is becoming more frequent. I contacted Neato and they advised to reset him by pressing the "house" button for 10-20 seconds, and if that had no effect then to try setting the switch to off when not on the charging dock and then turning him back on again, place on the dock and allowing the charging cycle to complete.
Both of these had no effect; Neato's recommendation is that a new battery is required. I decided to test the battery before going down this road. I used a battery charger / analyser (the sort that will charge battery packs for RC models) to both charge and discharge the battery pack. I measured a capacity of around 3700mAh (discharge rate of 0.5A) on both occasions - perfectly acceptable for a pack of that age that is specified for 3600mAh. More importantly the voltage / time discharge curve looked as I would expect for a NiMh pack.
Another possible cause of this sort of fault is the battery connector, I've inspected this visually and all appears ok, and it feels positive when inserting it. (I personally feel it is a bit lightweight for the battery connector duty, but then I guess space is at a premium in this device)
I've also used the Neato control application to discharge the battery to its cutoff voltage and then fully charge. I did this to re-educate the fuel gauge. The numbers displayed during the discharging and charging phases looked acceptable here too.
So, before I send this robot off to robot shop for repair under their 5 year warranty, what else should I check? Could it still be the battery and I am simply misunderstanding something?
Sorry for the long post but I hope the background helps someone come to Bertie's aid. Thanks