Solax Mobie Plus Mobility Scooter AGM Battery Replacement

thingiverse

This is a replacement battery design for a Solax Mobie Plus Mobility Scooter https://www.solaxmobility.com/online-store/Solax-Mobie-Plus-p110579264 The scooter cannot fold up with this battery in it, you need to remove it and carry it separately. These scooters use a 24v Lithium Ion Cell, that are very expensive to replace. Around $500 USD plus shipping. I designed this so I could use two AGM 12v Batteries which are 25AH. It has some issues with the slightly lower resting voltage for AGM batteries so it will read that the voltage drops on the scooters battery meter fairly quickly, but we tested this recently at world pride Sydney and the scooter is good for about 10-15k on a charge with these batteries. I do advise disconnecting the speaker for when it beeps, you will still get another 2k once it ticks over and starts flashing The two halves of the cover are designed to use a tie down commonly used for roof racks on cars. you can get from most hardware stores. this way the weight of the batteries is taken up by the webbing and not the plastic. I printed these in black e-Sun PLA+ While the base is designed to use the scooters original terminals which I have modelled, I found that the ones I made didnt make contact as well as the original and would disconnect when the scooter went over a big bump because of the extra weight of the batteries, so I just connected an anderson plug in parallel, so it can still use the original batteries, this is also how I charge the batteries. The AGM batteries where cheap from ebay around $50 USD each, you need two. I have included a picture for the dimensions. I have allowed for a variance in size of around 5mm I also charge my AGM batteries using a car charger which is faster than the one it came with, it has an auto shut off when it detects the AGM batteries are full. The charger the scooter comes with relies on the battery having a battery management system as many Lipos etc do, so just be weary if you charge your AGMs with the default charger as I dont think it will know to shut off, it will also charge at a slightly higher voltage for the Lithium Again, do your research, I dont profess to know everything about every type of battery but this solution worked for me. use at your own risk.