Hailong 2 65 Cell Battery Arrangement

[stevostud007]

Hi all, I am in the process of making a Hailong 65 cell pack for a 48v 1000w motor conversion kit. The controller is rated 15A with max of 30A according to the specs online as I am still awaiting delivery of the kit. The battery pack will be 13s 5p configuration using Samsung 30E batteries. There was unfortunately no nickel pack in the Hailong pack or any instructions as to the correct polarity of the batteries. I have attached some pictures of my drawings and battery connections and will be using 10mm 0.15 pure nickel strip for the connections. My question is are my battery polarity banks correct (the pic with the red and black lines) and should the 10mm nickel strip carry the current needed as I notice that the series connections only use 2 connections. The 10mm nickel is quite wide on top of the batteries but unsure if I could go say 8mm 0.2 as think my Sunak 709 may not spot weld that efficiently. Thanks if anyone can help.

 

[Nealh]

10mm x 0.15mm nickel is only 1.5mm2 & 8mm x 0,2mm isn't much better and only 1.6mm2.
Nickel ampacity 1mm2 is 4.459a optimal , 6.619a 1mm2 is an acceptable rating though may get warm.
Even using the acceptable rating your nickel size can't handle 10a, if you want 30a you are going to have to beef up the series buss connection. Each series connection needs to handle at least 15a.

Polarity layout looks good.
What cells never heard of 30E's.

 

[stevostud007]

10mm x 0.15mm nickel is only 1.5mm2 & 8mm x 0,2mm isn't much better and only 1.6mm2.
Nickel ampacity 1mm2 is 4.459a optimal , 6.619a 1mm2 is an acceptable rating though may get warm.
Even using the acceptable rating your nickel size can't handle 10a, if you want 30a you are going to have to beef up the series buss connection. Each series connection needs to handle at least 15a.

Polarity layout looks good.
What cells never heard of 30E's.

Thanks for the reply and sorry I meant the 30Q 3000mah at 20A, was going to go for the 35E but none in stock and at only 8A they would have been running near on their full discharge rate with the 30A controller. It was more expensive but I am trying to make a longer lasting battery.