I received my Torpedo PV the other day and so far am pleased with its performance. It's the battery charging that is making me a bit anxious. I have been reading about lithium ion batteries and have come accross some horror stories about them catching fire or exploding. I have heard mention of 'protected' and 'unprotected' batteries, I assume the supplied batteries are protected, right? The instructions provided state that the charger should not be left unattended so there must be some risk.
Anyway, I first attempted to charge the two (depleted) batteries at the same time, which went on for 8 hours before I unplugged the charger before going to sleep. I put it back on in the morning (Is it wise to stop and then resume charging?) for a further 4 hours before giving up. Both batt's gave a reading of 4.1 V. There is some info on lithium battery charging here: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
. Looking at this it seems as though I stopped charging during the 2nd (Saturation?) phase. It also says that not charging to capacity can be good for the batt's life expectancy but TW say to ensure that the batt' is fully charged. I performed another charge of a single battery today and gave up after 7.5 hours. Should it really be taking this long? Again, it came out at 4.1 V.
It is obviously impractical to babysit a charging battery for over 7 hours so is it ok to take them off early? or can anyone recommend a faster (and safe) charger? Not to imply that the supplied charger isn't safe.
Any help that anyone can provide for these issues will be greatly appreciated. Even if it is just to tell me I'm being paranoid.