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To charge both at once you will need a bigger one and a big battery bank. We have 2x 400w bosch powered bikes & a 1000W inverter I can charge them both at once but have to plug one in wait a couple of minutes then plug the other one in or they trip the inverter, it does hammer the batteries.
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As per my title, whats the Model/Type I should be looking for, I will need to be charging on the move 2 x 500Wh ebike batteries, perhaps together, am I OK with 1000w inverter. Thanks in advance.
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In that case i would look into wiring the inverter off the engine battery as the leisure battery (at least in my case) would discharge with a big load on, even with the engine running, especially when the fridge is taking 10 amps too.Hope to be charging while moving, wouldn't want to try charging them while static and off grid.....
I bought the 1500w pure sine inverter from them last year, so far so good works a treatI bought one from here:
https://www.sunshinesolar.co.uk/catshow/Pure_Sine_Wave_Inverters_12V/PureSineWave12V.html
Sale ends Tues 13th!
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@jumar It is the draw from the chargers that is the key thing, not the size of the bike batteries, so Colin says. What is the ampage printed on the charger or wattage?
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I believe it comes with a 2 amp charger....the battery capacity is 500Wh..
As per my title, whats the Model/Type I should be looking for, I will need to be charging on the move 2 x 500Wh ebike batteries, perhaps together, am I OK with 1000w inverter. Thanks in advance.
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Ok, this is from Colin -Hi Guys, waiting delivery of bikes from Germany ( Needed LHD Models) I believe it comes with a 2 amp charger....the battery capacity is 500Wh...more info when bikes arrive.
Ok, this is from Colin -
Based on the info given, the input to the charger is 240v at 2amps per charger
Ok, this is from Colin -
Based on the info given, the input to the charger is 240v at 2amps per charger, requirment for 2 chargers = 4amps at 240v, so 960watts. Meaning a minimum 1000w inverter needed, but better not to max out the inverter so go for 1500w. The draw from the batteries is roughly 4amps x 21 = 84amps.
You need to know what charge is coming from the alternator to the leisure batteries. If the alternator is not recharging the leisure batteries quick enough, bearing in mind it is also running the fridge while driving, it may be that you can only charge one at a time.
Not knowing the bike chargers it would best to go for pure sinewave to prevent any possible damage to the chargers.
Others may disagree or come up different maths, but this is Colin's view based on his experience.
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I forgot i also bought one of these when i purchases my inverter , deffo should buy one if you have the inverter installed below say seats as you want to be able to turn it of easy once finished using it so it does not continue to draw some residual charge.The remote control on/off which also shows battery state and power being used is worth buying, .. it's a plug and play.
(Note that 111 watts at 36 volts is 111/36 = 3 amps, as you said)there are 2 Bosch chargers, 1 x 2 amp and the other 1 x 3 amp
Of those that bothered to respond, the size of Inverter they recommended ranged from 2000W to 350W for the same job, which was very confusing. It appeared that the 'don't really knows' just say bigger is best.
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Hi Guys,
Bike one, (MINE) has been send from Germany.....if time permits I shall unpack, charge it up and take it out for a spin, but only if I have time, (YOU BET I WILL FIND TIME)
I can then report my findings are, the charger rate etc, and in return I should expect some final advice on what type/size inverter I require....to charge the batteries, not to make coffee' really Sandra...
What I guessed at. Most are 36V these days so your charger will be needing 36 * 2 = 72W plus a bit for losses. Say 100W.
500Wh / 36V = 14Ah so you are looking at 7 hours plus full charge time.
Simples.
I use a 300W inverter for similar load but only carry 1 charger.
Ok, this is from Colin -
Based on the info given, the input to the charger is 240v at 2amps per charger, requirment for 2 chargers = 4amps at 240v, so 960watts. Meaning a minimum 1000w inverter needed, but better not to max out the inverter so go for 1500w. The draw from the batteries is roughly 4amps x 21 = 84amps.
You need to know what charge is coming from the alternator to the leisure batteries. If the alternator is not recharging the leisure batteries quick enough, bearing in mind it is also running the fridge while driving, it may be that you can only charge one at a time.
Not knowing the bike chargers it would best to go for pure sinewave to prevent any possible damage to the chargers.
Others may disagree or come up different maths, but this is Colin's view based on his experience.
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Yes, but he still needs to know what size his alternator is, before buying the B to B, or A to B, doesn't he?You two should get a room, get your old electrical training certificates out and thrash it out between you......
@jumar
I am no electrical engineer but here's what I think you should do... Some may call it overkill, I call it killing several birds with one bank card...
As already pointed out. No matter what size inverter you have and what the draw off it will be, if you have it connected to the leisure battery(s) when being used you run the risk of arriving with half charged leisure batteries.
Get yourself a Stirling B2B or better still A2B charger hooked up to the leisure batteries minimum 50am.
Then get yourself a decent (I use stirling and swear by them) inverter, don't mess around get a decent one of 1500w minimum.
Then any draw taken out from your bikes will be replaced whilst you are driving along. However the bonus of this method is that you will also arrive with batteries ready to do their job in the van plus the option of being able to dry your hair, use straighteners a microwave coffee maker or anything else you may need to use...
We still need to know what the input to the charger - somewhere around where it says 230v it will say what wattage is. Maybe a photo of the data plate on the charger will help us all disagree amongst ourselves, before you decide for yo8urself.Got this beast of a bike now....the charger is 36 volt 2 amp....Bosch says it takes 7.5 hours to charge flat battery......500wh......my only leisure battery is 115ah....
Calculator out Colin.....what inverter do you advise?
We still need to know what the input to the charger - somewhere around where it says 230v it will say what wattage is. Maybe a photo of the data plate on the charger will help us all disagree amongst ourselves, before you decide for yo8urself.
Anyway, we have some fresh snow to go and slide on - back later.
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no not unless they have a really old van..Yes, but he still needs to know what size his alternator is, before buying the B to B, or A to B, doesn't he?
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