The block diagram and functionality of the BMS of a Specialized battery is as follows:
10 cells groups in series, 4 cells in parallel in each group. Each cell group has a sense line going back to a monitoring IC, e.g a Panasonic AN49511A. The AN49511A is reporting all 10 cells voltages to the...
Yes you can. Don’t attempt to service the forks damper cartridge, just do a lowers and air spring service. For the shock, only do an air can service.
Fork service manual here...
That pack is not suitable for ebike usage. The badly spot welded nickel strips are not going to hold it together. Cells from different groups are going to rub together, wear through the blue heatshrink sleeves and short out.
You need cell holders.
The spot welds on the negative end of the...
As someone who’s been the warranty assessor for a national distributor of industrial equipment, (don’t get excited, not bike related goods), I’ve seen this play out many times.
From time to time I’d come across damage done by a dealer, of goods worth low 6 figures, where the most expensive...
Saxon capacitors are a 2nd tier manufacturer at best.
Given the price of typical ebike chargers, I’d want to find Rubycon, United Chemi-Con, Nichicon, Elna or Samsungs, or good Panasonics being used.
Bet there has also been a cost down initiative and the most expensive active components are...
I used Time-Sert exclusively a decade ago doing Subaru engine repairs, specifically ej20 and ej25 when a block with stripped thread(s) would come my way.
I was once unmovable in my conviction they were the best. Maybe they were back then, but more recent testing seems to suggest they have...
One has a good handle on the engineering challenges around lithium batteries, in a big part due to entering the market with clear goals from the get go. The other has stumbled in by accident, outsourced everything to the lowest bidder, in a marketplace going through a metamorphosis. Going to be...
Yep, the BMS is doing Coulomb Counting, discharging/charging current is measured and integrated over time to calculate the amount of energy remaining inside the battery. The BMS compares theoretical to measured and returns the battery health number, starting at 100% and degrading from there as...
No way that’s bad luck.
Something is faulty, and it’s a rather odd issue.
The BMS is monitoring charger incoming voltage, if it’s above tolerance, which is probably 42.5 to 43.0volts, it’s terminating the charge cycle.
Likewise the bms is monitoring output voltage, and current. If the pack...
Retrofit kits are on my r&d list of things to work on.
All motors out there so far fail in some fundamental regard.
Some have plastic gears running against metal gears with grease that flings off inside 10 mins of use.
Some have belts that are too narrow, with pitches too small, with non...
That was me, not Planemo.
Ahh my bad. I never went and found the user manual. Drrrrrr, stupidly obvious now I should have checked there first.
14S2P at 58.8v 6.8Ah and 360Wh.
Panasonic INR18650GA.