Quote from: polskicowboy on June 22, 2023, 12:26:52 PM
I am running 3 batteries in parallel. The team at Grin Tech (ebikes.ca) said I do not need a balancer box since they are all 48v. Assume you need that if voltage is different, but then you run off the lower voltage anyway. They were right. over 1200 miles and not a single issue. The 2nd battery (14ah) hides in the center storage box of the rad runner 2 and I have a huge plastic crate from Uline as a basket holding a 3rd battery (reention 11.9ah) that one has the bms turning it off after a few min of bike off so I can press the button on it to turn it on if I want. And I regularly charge all 3 from the stock battery. I know some say this is wrong. But no issues with heat or anything. I can also charge all three separately if I am pressed on time.
Hope this helps... The 2 extra batteries are good quality from salvaged rental city bikes that people rent at stations hence I got them for a great deal. Believe they came from Vancouver. They are not knock off Alibaba kind. Meaning, there is always a risk of fire with lithium batteries. Safer to not leave plugged in overnight or park bike away from flammable objects.
-Rad Runner 2
-Grin Base Runner controller
-Cycle Analyst screen
-G62 Bafang 1000w rear
-Magura MT7e brakes for safety (amazing brakes with soft feel, can use one finger)
*Adding front regen motor and phaserunner controller next.
Seems really cool. Did you do all the upgrades yourself or did you pay a shop? I'd love to add another battery bur I'm not sure how.