I adore my Hill Topper. I bought it last year and used it on our bi-weekly bike rides (plus more as Covid lockdown made it the only exercise-I was using it every day) or about 11 miles. Until just recently the original battery was having no trouble. So I ordered a new one. I noticed that it took a bit longer to charge…which made me wonder if it is more powerful and lasting than the last one. So a pretty big improvement. And I bring the second battery as a backup to increase my range. Super easy to change out takes less than a minute or two.
And I sold my car due to it needing fixes that exceeded its worth, so my bike is now my only transportation now. Has been now for a few months and well I don’t miss my car at all. I may not even need a car with the electric bike, and since the bike is kept inside my house its so easy to carry the groceries in the baskets and bags. The wheel makes the extra weight a breeze to handle.
I recommend them to everyone who needs a bit of extra help up hills. The new Battery has given last years wheel a new lease on life and we can once more zoom up all the hills, or more likely a slight push on the throttle and I stay with the group.
Thank You.

The water bottle battery is handy and can be locked and left unattended when the bike is parked. It looks good and is well engineered: Form and function are well integrated.

I converted my wife’s Schwinn 7-speed-department-store-special into a bike that lets her go with me anywhere, with the Hiltopper kit.
It has been over a year now and my only complaint is we can only go about 13 miles. (But for the price and flexibility of install longer run time is a want, not a complaint)
I have solved our range problem with the purchase of a new battery. The old battery is still chugging along just fine, but we have now doubled the range and quelled any range-fear issues.
Now, I will install a water bottle holder for the additional battery, and we will have a 25 mile machine, cloaked as a Wal-Mart special!
With the Hilltopper kit pushing her Schwinn to 20 MPH on flat ground, we can pedal anywhere we want (within our new 25 mile range) without fear of her getting exhausted and not having fun.
With the install of the Hilltopper, the hilarity of my carbon fiber/ lighter than-my-wallet-was-after-I-bought-it Cannondale, getting passed by my lady on a Schwinn-beach-cruiser-with-a-basket, can continue. And now with a new battery it can continue for miles and miles…..
Thanks Hilltopper.

This batter exceeds my expectations!

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Second battery for longer rides with no worry about running out of power and piece of mind that no excessive pedaling to Wil be needed.