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Good job dismantling the battery, first time i see an Ebike battery with huge amount of foams and huge size capacitor. I've toying a lot on Hailong aka Bafang battery but the H70 one looks like some DIY stuff going on. Ironically H70 battery lasts longer than my Bafang battery. Btw did you...

Trickle Charge worked! That problematic battery survived yesterday commute all the way through my journey and going up the hill using previously mentioned trickle charging method. Only experience "minus one bar"voltage sag but recovered back to two bar after reaching flat land and arrived...

This method applies to old battery: Since i have not open up the battery case of H70, here how i do it with supplied original charger; Do normal full charge a drained H70 battery for 3~5 hours (depends how old the battery). When the Green LED lit leave it another 3 hours of continuous charging...

Thanks for the tips, will do. ;) Reply for Qiroll Support: Got reply from the support (Mr. Jason). Probably the probably 400W+ unit tested on with that battery was hit hard caused by over power consumption more than BMS can handle...still on test phase. Yes that battery was on Prototype...

Hi Blueberry, Thanks for showing up with tips. At first i thought it was a screw in type of cap like water bottle or jar. Glad you shared about the info that it was lock on adhesive glue. Question: Was the content inside tight fit with wires dangling about? Fear if i slid a thin blade...

Thanks for the info, i'll try to contact/pm Blueberry later. Btw how do you connect to alternative battery to Qiroll unit that have 3 terminal plug ends? Does Bafang/Hailong battery pack 48V works on Qiroll?

When charging the H70 battery once it was new last time and now an old battery there's no sign of heating up. Qiroll battery when charging there's no charge level indicator showing up. Those "leveled" indicator (4 bar LED level) only works when battery is hooked up with Qiroll unit on bike...

H70 battery problem. Has anyone encounter this problem? Today in the evening during cycling commute towards home from my office; half way on the road the Qiroll unit stop working. I saw my battery showing 2 solid bar blue LED light lit indicating i still have some power left in the battery...

TEST RIDE #1: QIROLL Prototype 400W+ Note to Qiroll product developer; Here's my latest finding when testing your prototype 400W+ unit. Weird knocking sound: 1st day test ride was ok when riding first 2km on flat road. However on 2nd day after i climbed a total of 4 km of hill climb with...

QIROLL Prototype 400W+ finally installed. Hey guys, sorry for long absent, finally i got a bought a small 16" inch folding bike to test out Qiroll's prototype 400W+ unit. Due to its size 400W+ could not be install on my road bike or any short rear frame wheel base. So this 16" wheel folding...

Yes the old version "trigger" switch was comfortable and easy on my cycling glove too. However after a year expose to heat weather and sunlight the plastic case breaks spilling all those switch parts guts out. The button type is robust/durable but hard to press and hold constantly throughout...

No updates, i don't see any releases on the powerful Qiroll on their website either. After i send feedback about the prototype unit being not able to fit on normal size "performance" bike they seems to immediately getting back into the drawing board trying to make adjustment to the clutch limit...

Planning to get brompton (cheapo clone) and fit with qiroll soon. Wait until i get the budget and post my setup here.

On my bike setup 100% of the time pressed against the tire. When power off = lots of drag (depends how tight you push the clutch roller to the tire). I run with power on all the time for commute to work.

My current bike setup. Battery still running well everyday.

Nice stealth setup, barely looks like an ebike. Keeping things looks like normal commuter bike.

Looks very minimalist, i like it. Stealthy front motor hubs looks like classic drum brake. Is that led strips around the wheel spokes?

As a guy who ride fast daily and brakes a lot on Qiroll Pro down the hill don't put 100% trust on regen braking to slow you down completely especially on heavy bikes. Pros: Its slow down "linearly" and recharge back the battery pack. Cons: It doesn't slow down heavy bikes above 20kg especially...

Definitely agree with that, sometimes when i use regenerative brake button to brake i didn't realized it actual change sport/boost (Red led) mode to eco (Blue led) after experiencing slow paced ride. To confirm i have to bend down to look underneath the bike for LED light confirmation. Hope...

Dear Qiroll, 400W+ unit need more clearance angle fit the tire. Modern performance bicycle and racing frame all have short rear frame triangle.