My bike and battery are now well over 2 years old, and my battery is begining to lose its capacity. I didn’t follow my own instructions on battery care and left it charged to 100% for a few months, and on more than one occasion. Plus when I did my 45 mile ride I dropped the charge all the way down to 2%… VERY NAUGHTY I know.
So as a result I’m now developing range anxiety, and instead of riding 25-30 miles in one go, I’m dropping this to 15 miles. So I’m worried and I need a new battery, but Halfords are currently out of stock of spare batteries. Then I started wondering if it’s possible to charge the battery with a power bank phone charger.
I’ve fired off an email to SR-Suntour to see if they can help, this is the email.
Hello to who ever reads this email.
Just over 2 years ago I bought the Carrera Crossfire-E from Halfords, and it’s been a blast riding this bike, your battery and motor make this bike awesome. I even made a website to share my thoughts and opinions https://the-bionic-cyclist.co.uk
Lately I’ve had a reduction in battery life, probably because I left it fully charged for too long, but hey this is England and the weather is totally unpredictable. The reduction is only around 10%, so even though I’ve not charged it the stated 500 times, I understand how Li-Ion batteries work and their limitations.
This brings me onto a couple of ways you the manufacturer could fix this in future.
1. Have the USB output stay on even when the LCD is off, this way I could easily discharge the battery and keep it around the 30%-40% mark for long term storage. Dendrites are the enemy after all.
2. The ability to charge the battery on the go, without mains power…. Wait whut? Yes, there’s now a metric tonne of power banks, some with 3, 4, 5, or even upto 20 18650 batteries installed. Sure they’re a little heavy, but so is a spare battery. So why not add another USB port that allows a rider to charge the battery while on the road. I realise there are limitations on powerbanks, mainly that they run only at 5v and a maximum of 5 amps. But a trickle charge still adds a few miles to a ride. Or you could manufacture a powerbank that outputs 36v and a socket to the main battery and charge a little faster.
The benefit of number 2 is simple, you could sell your own rechargeable power bank just for your battery packs (watch out for the input socket, it could get damaged, you could then have the spare power bank charged by another power bank… and so on,) and they would work with all your batteries out there now. It’s lighter than a spare battery and it should be a lot cheaper too. An extra 5-10 miles is still miles ahead of the competition.
The alternative is to add a USB INPUT to future products, but this leaves all current and future batteries limited to their initial state.
Personally I prefer number option 2, it’s flexible and adds a little more distance to all past present and future batteries.
Now on to a couple of questions I’d like an answer to please.
1. Where do I buy a new battery from? Halfords haven’t had the stock in a long time and mine is now giving me a huge amount of range anxiety.
2. Do you have a publicly available schematic for the battery? If I bought a new one then I’d like to teardown the old one and replace the 18650’s with improved new ones… thus giving me 2 batteries and preserving the old one to make it last another 2 years or more.
Please let me know what you think, personally I like the idea of charging on the fly, and I’m amazed that no one has yet thought of it. But if I’m wrong and it cannot be done or it would be impractical then just a quick reply will do.
What do you think, do the ideas have merit?