Basics of a Lithium-ion Battery Charger

[lenny]

 

[Biker44]

A video almost impossible to follow.
Whereas this video -

- makes the same thing look ridiculously easy.
At least in theory - in practise, the once highly regarded GOPHERT CPS-3205II (Portable Adjustable AC to DC Variable Switching Power Supply AC DC Converter 110V/220V switchable Great for Provide Constant Voltage or Current Supply) has vanished from reputable suppliers (Amazon and so forth) - "Currently unavailable. We don't know when or if this item will be back in stock."
All is not lost - there are many other suppliers of the same thing. However, there's a hitch. This power-supply ("charger") does 0volts to 30 volts and a 36volt lithium battery probably needs up to 50volts.
So, suppose I wanted to manually charge such a ("Silver Fish style" in an ali Extruded tube) battery, how would I do it?

 

[saneagle]

So, suppose I wanted to manually charge such a ("Silver Fish style" in an ali Extruded tube) battery, how would I do it?

Use the 60v version!

 

[Biker44]

Use the 60v version!

Ha! Thankyou! I've found it! Just £55 from a box-shifter-brings it to my door! Why are no other Bikers beating a path to this mans door?
There's even a 120 volt version for only five squid more.

 

[saneagle]

Ha! Thankyou! I've found it! Just £55 from a box-shifter-brings it to my door! Why are no other Bikers beating a path to this mans door?
There's even a 120 volt version for only five squid more.View attachment 60683

I recently bought this one (60v 5A), which was £61 all said and done. They added pre-paid tax at the time of order. Note that the max power is the same for the different versions, so if you get more maximum volts, you get less maximum current:

KUAIQU DC Laboratory Power Supply 30V 60V 120V Adjustable Voltage Regulator Bench Switching Power Supply Preset Current ON/OFF - AliExpress 13

Smarter Shopping, Better Living! Aliexpress.com

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