Recent content by Flyingppg

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    Best place for battery for e bike conversion

    I have this kit and we are very pleased with it. However the supplied controller is limited to 15a peak load (from memory) and this seller doesn't seem to offer anything other than a 36v battery so not sure what happens at 48v? The wheel is is also available in either screw on free wheel or...
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    Interested in motorhome e-bike charging solutions, ie 12v to 42v

    Greetings, We have a motorhome and recently I bought a Yosepower 36v 13ah 350w kit for my partner and fitted it to one of our hybrid bikes. We cycle a lot when abroad. She doesn't like the hills, I don't like waiting and neither of us like having a domestic! Neither of us are getting any...
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    Filing Quick release Drop out

    Hi, my partner and I have a pair of 622 hub (700c wheel) hybrid bikes that I fairly recently fitted a Yosepower 350w rear wheel kit to hers also running their 13ah 36v rack battery. It's been a nice conversion for both of us because she can now keep up and I'm not waiting at the tops of hills. I...
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    Where do you charge your battery?

    Yes, point taken. http://batteryuniversity.com/learn/article/charging_at_high_and_low_temperatures
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    Where do you charge your battery?

    All batteries perform less well when cold but you should find that after a little riding it will warm up and then start to go better. You can safely store your battery in the cold (the manufacturers must have specified something in the manual about temperatures) and the cold also means you don't...
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    Inverter ( 12 v to 240) ?

    Correcting myself: 10a and 90v output. Can be powered from between 10 to 60v dc.
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    Inverter ( 12 v to 240) ?

    No, it's not stepped like that. You can have any maximum current/voltage you like output up to 10a and 60v, power source and battery state of charge permitting and it will cccv charge up to those limits and then turn off when the battery is "full", in actual fact when the charging current drops...
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    Inverter ( 12 v to 240) ?

    Might do but it's behaviour when operating below 42v is unclear from the listing also if it switches off when charging reduces below a certain threshold, usually you want it to around 100ma. What you can't do with lithium it's leave it on trickle charge and you need a charger that will turn off...
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    Inverter ( 12 v to 240) ?

    If you want to go the inverter route and you're charging with a commercial charger the input amps will be written on the charger and over stated. For a typical 42v 2a 230vac charger a 250w pure sine wave inverter will be more than enough but still much heavier and less flexible in the motorhome...
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    Inverter ( 12 v to 240) ?

    So no testing information, and no references to share from the guy that sees these things as all important. And as you've already pointed out without such things anything you say is about as useful in the real world as faith and religion. I'm afraid I can't reconcile your lack of understanding...
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    Inverter ( 12 v to 240) ?

    Oh I see, you haven't actually tested anything. You're just getting this stuff from a book, internet, or more likely a forum I bet, but since you like your references and have them what are they because I'd like to read them too? I've actually tested a 2 year old pure sine wave inverter coupled...
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    Inverter ( 12 v to 240) ?

    If you have a better more efficient method let's hear it.
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    Inverter ( 12 v to 240) ?

    Absolutely. Ring a power company and ask them to connect you up to the mains. I think the original question was can one charge a, say, 36v bike battery from a 12v source, I guess because you are in your car or motorhome, without using an inverter. Yes you can and it is more efficient to do so...
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    Solar Chargers

    https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F182671320308
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    Can I charge my battery with a solar panel?

    Not strictly true. Most MPPT charge controllers are dc-dc step down "buck" converters but MPPT charge controllers that are dc-dc step up do exist and not expensive such as this: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F182671320308 This item is a...