Thanks for sharing. It is a mechanical switch to let the battery discharge from one to another as you want. So no concern to maintain the two batteries in same voltage level as the video explains.I found this video on youtube that explains quite well how to connect two batteries in series with a switch.
Which have you used?Eunorau Dual Battery Conveter
EUNORAU Ebike 24V/36V/48V/52V Dual Battery Hardware Converter/Dual Bat
Specifications: 1.Dual battery converter MAX 72V 40AH*2 2.WIRE 80mm include XT60 end 3.Size 51mm*40mm*12mm Blackeunorau-ebike.com
WattWagons Dual Battery Conveter
Dual Battery Converter - instantly double your riding range!
Have you ever wondered about what to do with all your old ebike battery packs ? Watt Wagons is introducing an incredibly easy way to use your old battery packs and double your riding range. This converter will only work with two packs of the same voltage (e.g. 2x48v, or 2x52v).wattwagons.com
Bolton Dual Battery Parallel Connector
Area 13
boltonebikes.com
I'd not be happy using a $4 switch. The specifications are worrisome.I found this video on youtube that explains quite well how to connect two batteries in series with a switch.
UPDATED SWITCH VERSIONIt's so much easier to just use a switch. DPDT
We used an inexpensive voltmeter. The switch has three positions.
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Frame battery - OFF - Rack battery
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So why don't you just put it on a rack and swap when needed it's the best safest optionYour welcome! I also thank you all!!I'm still learning things about the ebikes. So in the end the best choice is a mechanical switch rather than Double Battery Discharge Converter, right? Even if that converter doing everything automatically can be a bit stressful on batteries.
It's up to you. Others will claim the devices posted work for them. But so far I haven't seen a review of the devices by any source I trust. So far all we see here are the results of someone with no experience searching and finding devices. Given the nature of lithium batteries, I feel safest with a switch.Now I'm a little confused, so in the end should I buy a mechanical switch or a Double Battery Discharge Converter?
Seriously!? Posters should take the opinions of someone that has no relevant experience just parroting Google searches?I have seen a cheaper ebike using switch, for example budget friendly FTH Power X2-F (covered on EBR YouTube channel), but if you look at ebikes that are a little more expensive, Rize, Juiced, DOST, Ariel Rider, or even higher end bikes like WattWagons or Riese & Muller, they don't use switch.
Obviously it's up to you to go which one, but even if you watch EBR coverage on YouTube, there are tons of dual battery ebikes, and switch seems to be rare.
Seen is not knowing.I have seen
I don't know,it's just an amp difference between them. There are other bikes that come from the factory with 4amp chargers, and scooters that have 10A chargers.Could it be that charging at a higher amperage causes the cells to NOT balance properly? Kind of like when you fill a bucket of water with the hose full open, water will splash out. Topping it off will be harder. As opposed to, filling the bucket slowly so the water doesn’t spill over.
Some chargers cut off earlier , charge with 4amp then plug 3amp in and see if it charges more ,, you could always check with a multimeter from both chargersCould it be that charging at a higher amperage causes the cells to NOT balance properly? Kind of like when you fill a bucket of water with the hose full open, water will splash out. Topping it off will be harder. As opposed to, filling the bucket slowly so the water doesn’t spill over.
Thanks for your advice!! I'll do that next time.Some chargers cut off earlier , charge with 4amp then plug 3amp in and see if it charges more ,, you could always check with a multimeter from both chargers