Charging options for 48v pack from 12v dc

[Hillhater]

I could not find a answer to this simple question..
other than using a 12v to 120/240 v AC inverter and then a conventional ac charger,….….….
..what other options are there for charging a 48v ebike pack from a typical 12v dc auto battery system when camping ?
im sure others have solutions but a have faild to find them

 

[A-DamW]

I have seen ppl use these to charge lithium, ymmv:
https://www.amazon.com/ACEIRMC-Converter-Step-up-Constant-Electric/dp/B0923ZTZ5K

 

[harrisonpatm]

The link above is the way to go, yes. It's what I use to go from 48v nominal to 84v. Just make sure it has current regulation, which most boost converters of that quality do.

 

[Hillhater]

Interesting ?
I assume it must have some form of current limiting at least , if not an actual charge algorithm ?
and 1500W is quite a spec !
but the idea is good,
something like this would be ideal,…but with a higher output voltage..

https://www.amazon.com/Adjustable-Regulator-DROK-Converter-6-0V-36V/dp/B089ND7PTH/ref=pd_ci_mcx_di_int_sccai_cn_d_sccl_3_5/138-8659590-5873150?pd_rd_w=YNvP5&content-id=amzn1.sym.751acc83-5c05-42d0-a15e-303622651e1e&pf_rd_p=751acc83-5c05-42d0-a15e-303622651e1e&pf_rd_r=VZKGMEAVENJJY83337FE&pd_rd_wg=gnTeC&pd_rd_r=63dc2de3-83f8-4836-a716-8a04d55a8211&pd_rd_i=B089ND7PTH&th=1

 

[Hillhater]

Ahh ! A solution finally

https://www.gotronik.pl/images/MPT-7210A.pdf

best part is ,..i already have one in my workshop !

 

[harrisonpatm]

Ahh ! A solution finally

https://www.gotronik.pl/images/MPT-7210A.pdf

best part is ,..i already have one in my workshop !

I used it, it works ok, perhaps 75-80% efficient.