Mark_A_W
100 kW
Which Batteries did you pick?
I haven't as yet - i'm still working out which is the best pack to go for.Mark_A_W said:Which Batteries did you pick?
or do i have to individually switch off each battery from being in series with the other?
xyster said:or do i have to individually switch off each battery from being in series with the other?
So long as the chargers are isolated (either internally or by not having a common ground prong on the wall socket), there's no problem leaving the batteries in series while charging each one individually and simultaneously. That's how I charge my 20s15p lithium pack.
BiGH said:when you say common ground, so if i plugged them into a powerboard (each battery has a seperate powerpack that would be plugged into a powerboard and run from the wall socket)
is that bad or good (i know u run a powerboard and many many double adaptors
Powerstrip and powerboard are the same.xyster said:I'll assume a powerboard there is the same as a powerstrip here The powerboard can have a ground prong (be three prong), but unless the chargers are electrically isolated on the inside (like Soneils), the charger plugs that go into the powerboard must not have a ground prong.
The powerboard can have a ground prong because, so long as the chargers do not, the chargers won't be connected to that common ground -- hence no short.
All is good so long as all the chargers also don't exceed the wattage rating of the powerboard -- most powerstrips here are rated about 1500 watts -- so exceeding that rating would take about 11, 10-amp 12 volt (~15 peak) SLA chargers.
BiGH said:I just went to the garrage and checked the power adaptor for battery charger. its only a two pronged one, so the lack of ground - does that mean its ok to be used without switches... sorry i'm a bit clueless when it comes to these chargers. I think after reading the above - what ur saying is as long as there is no ground on the power adaptor from the charger (an electrically isolated ground is an exception to this) that its ok?
is that right?
Thanks again Xyster,
You've already helped so much!
Jozzer said:Lol....Dude, Thats the sort of picture that has a big red cross through were it to be found in a saftey manual!
BiGH said:Powerstrip and powerboard are the same.xyster said:I'll assume a powerboard there is the same as a powerstrip here The powerboard can have a ground prong (be three prong), but unless the chargers are electrically isolated on the inside (like Soneils), the charger plugs that go into the powerboard must not have a ground prong.
The powerboard can have a ground prong because, so long as the chargers do not, the chargers won't be connected to that common ground -- hence no short.
All is good so long as all the chargers also don't exceed the wattage rating of the powerboard -- most powerstrips here are rated about 1500 watts -- so exceeding that rating would take about 11, 10-amp 12 volt (~15 peak) SLA chargers.
I just went to the garrage and checked the power adaptor for battery charger. its only a two pronged one, so the lack of ground - does that mean its ok to be used without switches... sorry i'm a bit clueless when it comes to these chargers. I think after reading the above - what ur saying is as long as there is no ground on the power adaptor from the charger (an electrically isolated ground is an exception to this) that its ok?
is that right?
Thanks again Xyster,
You've already helped so much!
Mark_A_W said:I'm pretty happy with the acceleration of my nominal 250w motor (at 41v instead of 36v) - maybe 285w or so.
The freewheel speed is not enough, but the torque below it is fine.
So I have to admit I don't really see the need for 1250w, or 2500w, like some of the bikes here.
I'd like ~450 or 500w I think, just to get more speed.
Even ~285w is enough to turn an 11km/h hill into a 27km/h hill.
So I guess I'll have to have a go of your bike so I can get my mind changed