I’ve been looking for replacement batteries for my Segway quite some time. The Segway company discontinued Nimh battery packs in 2006 and started selling Li-ion battery packs only. A brand new NiMh battery pack was only about $400 in 2005, and I was able to get a pair of battery packs at $800. $800 still very expensive but they are now only selling Li-ion battery packs and the price for pair is $1700. They are unbelievably unreasonably expensive. I don’t think my Segway itself is not even worth more than $1700. It’s simply crazy. Anyhow, I found battery refill service from Ebay and I spoke to a sales person from the phone number posted on their ebay item (it’s not very common to find phone number from ebay listing as you might already know). I decided to try out their exchange service.
They shipped me a pair of refilled battery packs and I received the package in about 2 weeks. I charged them over night and I tried on the next day. I probably rode about 30 minutes in full speed. I guess I have had been gliding 6-7 miles and I still had three bars remaining (third bar was not even blinking). I am very satisfied with the battery performance. In my opinion, battery refill service is an excellent idea in many ways. I saved over $1000 and the refilled batteries work much better than when they were new, exactly they advertised. They will also refurbish my dead batteries and send them to someone else for good use instead of me trashing them.
I am thinking about doing refill service for my laptop battery and power tool batteries. I will probably have better idea when I try them out for laptop and power tool batteries. My experience was good one but it was for the Segway. I will keep update how the service goes with laptop and power tools.