leproto
100 µW
Hello all,
I want to present you my project and my disappointment about the Headway batterys.
I started to build this bike in objective to cycle to my job, 32km go and back. (project started in summer 2013) and your forum has been a big library, thanks! (easy to read, a lot of subject)
Base is a Specialized big hit 2 and I opted for Crystalyte solution 45A controller, computer, and HS3540 motor.
For battery, I mounted 24S with 38120S Headway(10Ah, 50A discharge) and BMS adequate (60A ~80V)
I bought 24 38120S headway/BMS/Charger in Ev-Assemble.
First run! great!!!! 69 km:h, fast, enjoy, really happy, big smile. :lol: (July)
But, when I wanted to charge juste after the run, nothing, one element was dead (0.07v for one).
After discussions with Michael from ev-assemble (where I bought the batterys/BMS/Charger 6A)
he sent me one element and I payed one more with shipment fee... ok
One month passed to wait, I received the element and all was good after assembly.
I started to cycle to my work.
I took my bike twice a week to go to work.
Perfect, some accessories for the night and bagages.
All was perfect, easy to use, plug and it charged.
But, with the cold weather, autonomy was bad, no worries, I could cycle 16km to work and I charged it for the return.
And this week, not cold, i wanted to charge it, nothing... bad.
The charge did'nt started. (one element?) no worries, I had one element in spare.
But when I wanted to change one, it proved to be that it was 2 elements who were dead!
I can't repair it!
And with my ohmeter, I can check some disparities for each element...
I'm not really happy with this brand, I may have already done 100 cycles of charge/discharge and it's not good.
despite BMS and quality assembly...
It seems that the quality of batteries is really perfectible. I assume that some more will pass out in even less time if I change one more time.
I have not written yet to Michael from Ev-assemble at this time, but I'm little bit disappointed.
I lost the price of battery system (~650€)
I want to present you my project and my disappointment about the Headway batterys.
I started to build this bike in objective to cycle to my job, 32km go and back. (project started in summer 2013) and your forum has been a big library, thanks! (easy to read, a lot of subject)
Base is a Specialized big hit 2 and I opted for Crystalyte solution 45A controller, computer, and HS3540 motor.
For battery, I mounted 24S with 38120S Headway(10Ah, 50A discharge) and BMS adequate (60A ~80V)
I bought 24 38120S headway/BMS/Charger in Ev-Assemble.
First run! great!!!! 69 km:h, fast, enjoy, really happy, big smile. :lol: (July)
But, when I wanted to charge juste after the run, nothing, one element was dead (0.07v for one).
After discussions with Michael from ev-assemble (where I bought the batterys/BMS/Charger 6A)
he sent me one element and I payed one more with shipment fee... ok
One month passed to wait, I received the element and all was good after assembly.
I started to cycle to my work.
I took my bike twice a week to go to work.
Perfect, some accessories for the night and bagages.
All was perfect, easy to use, plug and it charged.
But, with the cold weather, autonomy was bad, no worries, I could cycle 16km to work and I charged it for the return.
And this week, not cold, i wanted to charge it, nothing... bad.
The charge did'nt started. (one element?) no worries, I had one element in spare.
But when I wanted to change one, it proved to be that it was 2 elements who were dead!
I can't repair it!
And with my ohmeter, I can check some disparities for each element...
I'm not really happy with this brand, I may have already done 100 cycles of charge/discharge and it's not good.
despite BMS and quality assembly...
It seems that the quality of batteries is really perfectible. I assume that some more will pass out in even less time if I change one more time.
I have not written yet to Michael from Ev-assemble at this time, but I'm little bit disappointed.
I lost the price of battery system (~650€)