charger 3kw

Batteries, Chargers, and Battery Management Systems.
Doust72   10 mW

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charger 3kw

Post by Doust72 » Mar 08 2020 5:55pm

Hello everyone everyone knows a way to recharge a 72v battery with a 2000w-3000w charger or more as light as possible to linteger my bike.
I found this if someone has a better idea
https://fr.aliexpress.com/item/40001925 ... 2e0ejfyZjZ

if there is a charger that can be plugged into a conventional electrical outlet and into electric car charging sockets it would be great


thank you

BH4SKM   100 µW

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Re: charger 3kw

Post by BH4SKM » Mar 09 2020 12:29am

Buy a second-hand product, Delta 4856AC, can be modified 0 ~ 120V / O ~ 25A

BH4SKM   100 µW

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Re: charger 3kw

Post by BH4SKM » Mar 09 2020 1:09am

APR48 3G, DC41V~80V,0~38A
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Doust72   10 mW

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Re: charger 3kw

Post by Doust72 » Mar 10 2020 1:42am

you have the links to buy some I can't find the models you give me or they are not at the right voltage for my battery I have a 72v battery so 84v fully charged

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 10 2020 7:15am

https://www.google.com/search?q=APR48-3G+datasheet

Looks like 43V minimum *2S will be just a bit too high voltage, so use a HVC?

best to discuss it in an an existing discussion thread, lots here already on ES

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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 10 2020 10:17am

https://www.aliexpress.com/store/group/ ... 03805.html

up to 8kW, if you want to murder your cells even more.

please not that you WILL create LOTS of heat in your battery and cause a thermal "issue" (aka: massive fire) if you dont watch the internal temperature of your battery. it is VERY possible to burn down your bike with a 2kW or bigger charger. lifepsan reduction i wont even start about...
Lithium beats liquid dinosaurs.

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 10 2020 11:21am


Link doesn't work for me, any alternative path?

Maybe some unique name or text to google?


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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 10 2020 2:57pm

john61ct wrote:
Mar 10 2020 11:21am
Link doesn't work for me, any alternative path?

Maybe some unique name or text to google?
https://www.aliexpress.com/store/1242857
Lithium beats liquid dinosaurs.

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 10 2020 3:24pm

No go, maybe their website tech team stayed home 8-)

Trying this
https://www.google.com/search?q=site%3A ... 000W-5000W

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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 10 2020 4:02pm

john61ct wrote:
Mar 10 2020 3:24pm
No go, maybe their website tech team stayed home 8-)

Trying this
https://www.google.com/search?q=site%3A ... 000W-5000W
ZJIVNV Official Store
Lithium beats liquid dinosaurs.

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 10 2020 4:16pm

Yes can find the store no problem, but not the charger (PSU), deleted the app still no go.

Never mind could be my setup,

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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 11 2020 12:29am

john61ct wrote:
Mar 10 2020 4:16pm
Yes can find the store no problem, but not the charger (PSU), deleted the app still no go.

Never mind could be my setup,
dont use the app, just use your pc.
Lithium beats liquid dinosaurs.

HK12K   10 kW

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Re: charger 3kw

Post by HK12K » Mar 11 2020 10:57am

Perhaps this will work.

https://www.aliexpress.com/item/4000515 ... 4e5dcnU45H

If not, go to the vendors online store and look on the left to narrow the scope of the search and click "S-2000W 3000W 5000W" then go to page 2 of the results for the 8kw version.

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 11 2020 2:13pm


john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 11 2020 2:27pm

Doust72 wrote:a way to recharge a 72v battery with a 2000w-3000w charger
The C-rate being too high will shorten your pack lifespan, especially when the cells aren't very warm.

So besides ambient temperature or ability to pre-heat the pack

its size in Ah will determine how powerful a charge current to use.

Ideally your charger allows for adjustment of both voltage and current so you have choices depending on the circumstances.

Plus the safety concerns flippy expressed.


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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 12 2020 11:54am

john61ct wrote:
Mar 11 2020 2:27pm
Plus the safety concerns flippy expressed.
https://www.aliexpress.com/item/4000743682041.html

or

https://www.aliexpress.com/item/4000782479393.html

eiter should be mandatory if you plan on doing something if you dont know if those cells can even take the "fast" charging currents while being confined in a pack.
Lithium beats liquid dinosaurs.

HK12K   10 kW

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Re: charger 3kw

Post by HK12K » Mar 12 2020 12:16pm

flippy wrote:
Mar 12 2020 11:54am
john61ct wrote:
Mar 11 2020 2:27pm
Plus the safety concerns flippy expressed.
https://www.aliexpress.com/item/4000743682041.html

or

https://www.aliexpress.com/item/4000782479393.html

eiter should be mandatory if you plan on doing something if you dont know if those cells can even take the "fast" charging currents while being confined in a pack.
...and for the quick charger on the go with no time to sit around monitoring things...

https://www.safelincs.co.uk/fireblitz-a ... inguisher/

:wink:

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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 12 2020 12:36pm

HK12K wrote:
Mar 12 2020 12:16pm
...and for the quick charger on the go with no time to sit around monitoring things...
https://www.safelincs.co.uk/fireblitz-a ... inguisher/
:wink:
automatic is just for lazy people. :mrgreen:

but FE-36 is nice stuff. i still got old style halon in my car and kitchen. 8)
Lithium beats liquid dinosaurs.

Doust72   10 mW

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Re: charger 3kw

Post by Doust72 » Mar 14 2020 4:11am

in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller

http://adaptto.com/Products/Charging-Coils/

john61ct   100 GW

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Re: charger 3kw

Post by john61ct » Mar 14 2020 9:22am

Translation:

Is it possible to use this Adaptto "charging coil" with other controllers, or is it designed so that it only works with theirs?
Doust72 wrote:in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller

http://adaptto.com/Products/Charging-Coils/

Doust72   10 mW

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Re: charger 3kw

Post by Doust72 » Mar 14 2020 12:32pm

What does he use as a 3kw charger in your opinion?

https://www.youtube.com/watch?v=B1-vh3m6zI8&t=2s

HK12K   10 kW

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Re: charger 3kw

Post by HK12K » Mar 14 2020 9:58pm

Doust72 wrote:
Mar 14 2020 4:11am
in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller

http://adaptto.com/Products/Charging-Coils/
Charge coil was used exclusively by Adaptto as far as I am aware. No other controller that I know of can or does utilize one for charging.

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flippy   1 MW

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Re: charger 3kw

Post by flippy » Mar 15 2020 4:14am

john61ct wrote:
Mar 14 2020 9:22am
Translation:

Is it possible to use this Adaptto "charging coil" with other controllers, or is it designed so that it only works with theirs?
Doust72 wrote:in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller

http://adaptto.com/Products/Charging-Coils/

no.

it still requires a low voltage DC power supply and uses the controller as a current and voltage control.

its a nice idea but stupid in practice.
Lithium beats liquid dinosaurs.

HK12K   10 kW

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Re: charger 3kw

Post by HK12K » Mar 15 2020 12:55pm

flippy wrote:
Mar 15 2020 4:14am
john61ct wrote:
Mar 14 2020 9:22am
Translation:

Is it possible to use this Adaptto "charging coil" with other controllers, or is it designed so that it only works with theirs?
Doust72 wrote:in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller

http://adaptto.com/Products/Charging-Coils/

no.

it still requires a low voltage DC power supply and uses the controller as a current and voltage control.

its a nice idea but stupid in practice.
Since we're on the subject, the Adaptto required the coil while the Nucular does not yet both seem to be able to charge from a wide range of dc sources.

Did having that coil allow the Adaptto to do something that the Nuc is unable to do, or did Nuc just figure a way around it?

My best uneducated guess would be the Adaptto being able to effectively trigger the PSU on and off (so to speak) where the Nuc would just keep absorbing current, but I'm wildly guessing there. Something I've wondered for a while but haven't seen discussed that I can recall.

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serious_sam   1 kW

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Re: charger 3kw

Post by serious_sam » Mar 15 2020 4:21pm

HK12K wrote:
Mar 15 2020 12:55pm
Since we're on the subject, the Adaptto required the coil while the Nucular does not yet both seem to be able to charge from a wide range of dc sources.
The Nucular uses the motor coils to increase the charge voltage. Not sure why the Adaptto used a separate coil instead. It looks like the Adaptto charge coil also had the capacitors as part of that harness though:
viewtopic.php?t=66661

In my understanding, they both use the same process. Google "boost converter", and then note the similarities to the Nucular controller schematic:
Nucular Controller Schematic v2.5.pdf
(1.23 MiB) Downloaded 12 times
I don't know if the Adaptto terminates charge. Currently the Nucular doesn't terminate charge, but Vasiliy said it will been added to their to-do list, so it will be available in a future firmware update. It won't control the charger directly, it will just disconnect it from the battery at a predetermined charge level.

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