SP140 (Founders Edition) - charger specs / which charger will be included?

Hello!

In the “Includes” section of the SP140 shop description a battery charger is mentioned as “fast charger (charges in 2.5 hours)”.

  • May we please get some details what charger is included?
  • Does it support 220 Volt (Europe) or only 110 Volt (US) input?
  • Does it charge the 2 kWh or the 4 kWh battery in 2.5 hours?
  • Is it by any means specific to the battery shipped with the SP140?

…I guess not, thus:

  • What are the biggest batteries it supports? (=> is it also suitable for other projects e.g. 14S LiPo)

Thanks!

I’m struggling to believe that the charger could fully charge a 4kw battery in 2.5 hours on a 110 volt outlet as that could take upwards of 18 amps with transformer inefficiencies and most house breakers are around 20 amps, but I guess it could be possible. I personally think it’s more likely that they are using a 220v outlet, but this is all speculation

As for charging other batteries, this charger is basically a glorified power supply. The paramotor battery has a built in BMS so it doesn’t need to balance the battery or even have a cut off built into it. With this in mind, I doubt that it could charge your other batteries.

Yes bob is correct, the charger is a 10a 100v power supply basically. So that would be equivalent to a 1kw so for a fully discharged 2kwh battery it would take 2 hours. And same with the 4kwh if it was fully discharged, it would be 4 hours.

We could do a 20a charger, but it might be a problem for some as you can use a 110v outlet, and some don’t have the 20a outlets, 15a is pretty common in the US. But if some of you guys want the 20a faster charger they are sorceable as that is what i used for awhile. Id did have a tendency to trip my breaker if I open the garage door. But i like this newer charger better as my routine is bacily fly in the evening, either plug it in over night or if i see the weather is looking nice the flowing day i plug it in after lunch. Or i leave it charged. Also this newer charger has a screen that show the voltage,amps, and indicating lights to show when its charged.

The charger is just a slightly more intelligent power supply, but you could use any 100v power supply as the battery does have its bms built in, and its rated for up to 80 amps of charge current. So you could charge the batteries up in 20mins for the 2kwh pack and 40mins in the 4kwh pack. But that wouldn’t be safe for the 2kwh pack as that would be over the max charger rating for the cell (which is 6A), So if you did have a very beefy power supply, the max time you could charge up the 4kwh pack would be 40mins will still being under the manufacturer’s safe rating. (you can see specs here https://cdn.shopify.com/s/files/1/0697/3395/files/samsung-40t-datasheet.pdf?6001754416888422053)

Now I wouldn’t recommend that as that would decrease your cycle life a lot, so that is why i think the 10a as a sweet spot, as it maintains battery health, and isn’t too slow as to get annoying and is compatible with most households.

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For a lithium chemistry battery without active cooling it’s unwise to exceed 0.5C charge rate.

Is it supporting 110 Volt (US) only or also 220 Volt as commonly used in Europe?
Many modern power supplies will support both out of the box, but getting a confirmation from you would be good.

Thanks!

Ya depends on the manufacture and chemistry, “lithium” is a broad category. I would look at the datasheet on the cells. But generally the slower you can charge the better. I have charged at 1c and didn’t measure a significant temp increases without any active cooling just depends on the cells specs.

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Can you also share the datasheet/specs of the BMS used in this battery? I’m figuring out a solar-based DC-DC charging system for these batteries and need to know BMS limitations (voltage spike protection, current, cutoff, etc)

Founders Specs that I know so far:
Battery
ABS construction shell
24S - 2170 cells
8.0mm antispark connector
8 Gauge wire?
100v 10A charger

ESC
ADP UHV 28S 300A? - https://shop.powerdrives.net/?product=uhv-28s-120v-300a

Motor
MAD M50?

My guess is that they are using these ESCs

24s 200A

looking at the video it’s a screw terminal as well the first three letters on it says UHV.