REVIEW: QR-E 250W ELECTRIC BOOSTER BICYCLE MOTOR AND B60i AND B70 BATTERY

New Qiroll H70 battery arrived!

Finally i need to replace my 4 year old H70 battery..nothing wrong still works but sag 2 LED blue bars (voltage sagging) when i ride just doesn't have that "OOmmpphh!" power like it used to recently this month. However consider this old battery have been survive for 4 years with everyday bike commute use to work and daily charging i was amazed it still hold up today without dying. Old battery still alive hopefully i'd get extra lifespan until next year. Kudos to QIROLL for making quality battery while my other e-bikes battery died within a year for triple the price.

As for new battery i bought last week (fast shipping): Qiroll H70 it looks like an improvement over the old ones with different cap color and added proper user label. I'm planing to get another one after i do some rigorous battery test this week. Btw thanks to QIROLL again for adding extra goodies inside the box: Free switch cable (Actually my old ones was wreck) and also Quick release adapter (Also i need it for my folding bike)....i didn't ask for it but it seem that they can read my mind across continent, lol! Awesome gift pack.

Hope this new battery give me another 4~5 year of riding longevity. :cool:😍

Photos:

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New battery tested, felt like super human again. Gonna order 2nd one so i could daily rotate its usage.
 
Hi everyone,
I recently printed a batch of high-quality stickers for the Qiroll H70 Lithium-Ion Battery Pack. I printed extra copies, so I’m offering them to anyone in the community who might need one

Sticker Details & Specifications:

  • Dimensions: 85 mm × 120 mm (designed specifically for the H70 casing)
  • Finish: Premium matte lamination (durable, scratch-resistant, and weather/water-resistant)
  • Adhesive: High-tack permanent adhesive
  • Design: Replicates original battery specs table, safety warnings, and technical data clearly.
Price: €12 / $13 USD each (Standard worldwide shipping included)

Location:
Shipping directly from Germany 🇩🇪

Payment: PayPal

If you're interested, drop a reply here or send me a Direct Message (DM) with your address!

Cheers!
If not ALLOW please delete!
 

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I've sent this email to Qiroll but would like others opinions. (On another topic, here is my unboxing of this kit:
)

I've had this kit for a few years now and everything is still working great. The only issue I have is with the friction layer. I recently applied my last friction layer and it came off after only a few miles. The adhesive separated from the rubber part. So I've been using the kit without the friction layer. Seems to be working fine. What are the long term effects of not using the friction layer? Seems to me that there might be slightly more wear on the tire but I can't imagine the hard surface will wear very much since the tire is much softer. And maybe that the tire will slip more easily since the coefficient of friction will be lower? Please let me know if I may continue to use the kit without the friction layer.
 
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