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Why an E-bike BMS cannot accurately measure battery capacity

Better BMS with warranty handling support

Electric Vehicle (EV) batteries can determine their capacity accurate enough to rely on for warranty purposes. EV’s have a built-in battery analyzer that also reads and interprets BMS data, which is vital for warranty evaluation. This article explains which limitations an E-bike BMS has, how to deal with this and how to -theoretically- resolve this. Continue reading Why an E-bike BMS cannot accurately measure battery capacity

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Battery Testing v.s. BMS readout

When the state of health of a battery needs to be determined, most manufacturers rely on the readout of the BMS. Although most BMS’s provided a number, it does not say how reliable it is.

The BMS state of health (SOH) value

Most battery packs have a BMS that is based on a standard IC solution. Well known suppliers are O2micro and Texas Instruments. They have documented to algorithm used to calculate the State of Health. The chips computer the FullChargeCapacity (FCC) value if a discharge from full to empty has been done. Continue reading Battery Testing v.s. BMS readout

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Past, current and future trends in e-bike battery testing & safety

In 2012 a seasoned Dutch electronic design team started to design a battery analyzer, specifically for e-bikes and after extensive consultation of the e-bike industry. After extensive alpha & beta testing in 2013 by many e-bike professionals and many valuable suggestions, the final release –aimed at e-bike dealers- was introduced in February 2014 and in fall 2014 follow-up models for S-Pedelecs and higher.
Continue reading Past, current and future trends in e-bike battery testing & safety

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Battery Condition Test introduces OEM battery tester for Pedelecs

E-bike (system) manufacturers now have the option to offer their dealers an economical (volume pricing as low as € 195) battery tester with specifications, exactly fitting the requirements and with optional BMS interfacing, fine-tuned to your requirements. Custom cables and OEM branding will be available. Future upgrade to standard models is possible! Continue reading Battery Condition Test introduces OEM battery tester for Pedelecs

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E-bike battery Warranty texts for BMS data

For senior managers of e-bike (system) & battery manufacturers/importers

Battery Condition Test offers implementation of BMS to e-bike manufacturers or their suppliers. R & D costs are not charged when the manufacturer commits to recommend BCT’s battery analyzers to their (OEM’s) dealers, BCT considers the BMS suitable and the scale justifies this. Continue reading E-bike battery Warranty texts for BMS data