ElectricTraveler
1 µW
- Joined
- Feb 12, 2018
- Messages
- 3
I have been spending a great deal of time reading and trying learn and tailor for my build. I believe that the direction i am going is a good one, but before I spend any more time and money some opinions are a good thing
Hardware currently in hand:
Motoenergy ME-0708 48V, 100 amps continuous, 300 amps for 1 minute
Alltrax SR48300 300amp max
Hardware I propose to purchase.
Qty 7 Nissan Leaf batteries 16S
BMS (https://www.ebay.com/itm/60V-67-2V-16S-150A-Lithium-ion-Li-ion-Li-Po-LiPo-Polymer-Battery-BMS-PCB-System-/221763000252)
Charger http://www.thunderstruck-ev.com/cycle-satiator-24-48v.html
I have been contemplating Leaf and Chevy Volt batteries as they are plentiful and reasonably cheap. This is where I am a bit confused with the nominal vs max vs. min and how the Alltrax paired with the ME-0708 will work. It is not my intention of over-volting the motor or for that matter under-volting with the early generation Chevy Volt battery. The newer generation Chevy Volt battery are ~56V nominal so that seems high. Guidance here would be of great interest.
I have been told that the BMS is not completely necessary, provided they are balanced occasionally and the voltages are monitored while charging and discharging. There are risks with this scenario. The BMS I linked can only handle 150amp continuous although the motor can take more. I figured limiting this max current in the Alltrax controller would work. A BMS that can handle the higher current may be too costly at this moment.
The charger I linked seemed to be really flexible and possible the answer to safe charging with out a BMS.
Hardware currently in hand:
Motoenergy ME-0708 48V, 100 amps continuous, 300 amps for 1 minute
Alltrax SR48300 300amp max
Hardware I propose to purchase.
Qty 7 Nissan Leaf batteries 16S
BMS (https://www.ebay.com/itm/60V-67-2V-16S-150A-Lithium-ion-Li-ion-Li-Po-LiPo-Polymer-Battery-BMS-PCB-System-/221763000252)
Charger http://www.thunderstruck-ev.com/cycle-satiator-24-48v.html
I have been contemplating Leaf and Chevy Volt batteries as they are plentiful and reasonably cheap. This is where I am a bit confused with the nominal vs max vs. min and how the Alltrax paired with the ME-0708 will work. It is not my intention of over-volting the motor or for that matter under-volting with the early generation Chevy Volt battery. The newer generation Chevy Volt battery are ~56V nominal so that seems high. Guidance here would be of great interest.
I have been told that the BMS is not completely necessary, provided they are balanced occasionally and the voltages are monitored while charging and discharging. There are risks with this scenario. The BMS I linked can only handle 150amp continuous although the motor can take more. I figured limiting this max current in the Alltrax controller would work. A BMS that can handle the higher current may be too costly at this moment.
The charger I linked seemed to be really flexible and possible the answer to safe charging with out a BMS.