Cable plug to frame connection is on side of down tube close to left pedal/foot. If not perfectly installed, it's easy to bump the plug loose. While I understand you want 2 O-rings to provide a weather tight connection, I need to get on my hands and knees and use reading glasses and a head light to see proper orientation and securely lock in place. With this in mind, range on primary battery may be much lower anticipated. A recent 26 mile ride on a logging road used 86% of primary battery. Cut ride short because I couldn't get the extended range battery properly locked in. When cord got bumped loose motor temporarily shut down. (Note: use with Creo 2 SL expert. Also have S-Works Roubaix. I'm glad I didn't buy the S-Works Creo 2.)

It changed the way I plan my bike rides, about 50% more time enjoying pedaling, more often with turbo assist when I get tired ( am 73 ). Definitely recommend this addition despite the high price !

While I like the bike and range extending battery- the cable connecting the battery to the bike is awful. I am on this site to buy my 5th cable- since it breaks in normal use.

Like other reviewers, I love this battery and consider it an essential addition to the Creo SL. I'll add a setup trick that others haven't mentioned: the Creo can be set to drain both batteries equally, or one battery first. I've set mine to drain the RE battery FIRST. Since my daily loop can be finished on the RE battery (mostly), I only charge the internal battery every 1-2 weeks, massively extending its lifetime. Much cheaper to replace the RE battery when it wears out than the internal.

There should be a cable included, even diff bike may need diff length, it should be able to select at purchase. Also the click collect shop closed early than normal opening hour, there was no call from the shop. I end up have to call and arrange to myself, and go second time to get it...

all good and expected apart from needing to order a separate cable to connect to the bike. That's not made clear in the description. Factor in another £30 GBP for the cable and don't forget their are a few cable variations and need to choose one that's specific to you bike.

After having removed the internal battery to fly the bike to Europe. All I had was one extender range battery to use. It lasted through the Strade Bianche Granfondo medio 89 km 1500 meter bike ride with two bars left. Granted I am a small female in eco mode but that range is still amazing.

Excellent, pretty much doubles my range....I now have more range than riders on 700wh batteries.

Just did a 37km ride (750 meters climbing) in 1h40. Switched between sport and turbo (vado SL) and still had a combined range of 80km left. Would totally recommend. It is expensive, but looking for a second one if it can be daisy-chained.

The Range Extender gives me peace of mind when riding with the many cycling clubs that I ride with. I don't have range anxiety as it adds around 20 miles, based on my typical use. I burn around 2-2.3% of battery capacity per mile. So, with this battery adding 50% and once you subtract 5% for battery health, yielding 45% and divide that by 2.3% you'll find it adds (for me) around 19-1/2 miles range. When combined with the internal battery, my typical ride of from 45 to 56 miles is not a problem, range wise. My wife's battery failed after 2 months and Specialized had a local shop exchange it the same day. Not bad....