Haibike Allmountain 5 Yamaha PW-ST: 17.2mi uses 17% battery, normal?

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Hiya Ive Done 17.2 Miles Yesteday On My Haibike Alltrail 5 Yamaha Pw St Motor 630WH Battery, From 100% I Had 83% Left, Is The Battery Health Good, How Much Has It Depreciated From A New Battery

 

[Greg Watts]

Hiya Ive Done 17.2 Miles Yesteday On My Haibike Alltrail 5 Yamaha Pw St Motor 630WH Battery, From 100% I Had 83% Left, Is The Battery Health Good, How Much Has It Depreciated From A New Battery

Good stat to track, but it doesn't actually answer what you're asking - one ride's percentage-used tells you range on the day, not battery health. Those are different things.

The maths: 17% of 630Wh is ~107Wh used for 17.2 miles, so roughly 6.2Wh/mile. That's a perfectly respectable consumption rate for mixed terrain - and worth noting it's currently warm (+20°C here), which genuinely helps li-ion range, so a winter ride on the same loop would likely eat more percentage for the same distance. Without a baseline ride from when the pack was new (same route, same assist mode, same temperature), you can't turn "83% left after 17.2 miles" into a depreciation figure - it's simply not enough data on its own.

For actual health, Yamaha's PW-series batteries have a built-in check independent of the display: by pressing down the button on the battery for a given amount of time, you can obtain information about the number of cycles and the absolute battery capacity - how much energy storage capacity the battery has lost since new.

A new battery reads 100% absolute capacity, a battery that's lost 26% reads 74%, and it's shown in 25% increments via the LED sequence on the battery itself - no app, no dealer tool needed. Given yours is a transplanted PW-ST unit, that button-press method is your best bet since (as we covered before) Display C itself doesn't surface health data.

Worth doing that check on a cool day too, so you're not comparing a warm-weather reading against whatever "100%" originally meant.

 

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Would That Be A Perfectly Performing Battery

 

[Greg Watts]

Would That Be A Perfectly Performing Battery

No - and this is the bit worth being straight about: "used a sensible amount of Wh per mile" and "battery is at 100% health" are two different claims. The consumption rate just tells you the motor wasn't guzzling unusually hard on that ride; it says nothing about how much total capacity the pack has lost since new. A battery at 80% health can still return a perfectly normal Wh/mile figure on a given ride - it just means you'll hit empty sooner overall.

The only way to actually answer "is it perfectly healthy" is the LED check I mentioned - hold the button on the battery itself and read off the absolute capacity via the LED sequence, in 25% steps. If it lights up as 100%, then yes, genuinely perfect. If it's dropped a step, that's your depreciation number, no guessing required.