Spare Battery For Magnum Cruiser


New Member
I have a Magnum Cruiser with a 48V, 13ah battery driving a 500w motor. I was wondering if there were non-OEM batteries available? The factory replacement is around $680. It would be nice to have a second battery to extend my range beyond 45 miles. I have never run my battery completely down, but 45 miles looks close.
My concerns relate to warranty conflicts, compatibility with internal electronics, and of course connector match. I would be interested in reputable companies located in the United States. I am located in Central Florida.


New Member
Hello, I'm Susie. Nice to know you!
Are you still looking for spare battery?
Is your battery looking like this attached?
We can do exactly the one you need, 48V 20.4AH biggest, for 500W motor power we will use 20A BMS.
We suggest you using Sanyo 35GA cells, which will bring you awesome riding experience.
Our Dorado batteries by Sanyo 35GA cells are very popular on facebook bike groups.
Pls check folloing detailed reviews for our battery 36V 17AH.
You will not regret to buy our battery.
Many users said it's even better than the original battery.
If you have not bought it yet you're lucky to be found by me, really!
Contact with me pls!

My email:
WhatsApp / Wechat ID:+8613586917731

Looking forward to your response.


Mike's E-Bikes

Well-Known Member
Wouldn't it be awesome if these battery suppliers simply came out with a cross reference chart, that shows Brand x battery, and corresponding replacement or even capacity upgrade, with their part number and price ?

the auto industry does this well for gazillions of parts and hundreds or thousands of makes and models going back years.

Doing these as a one off custom deal, is cumbersome, and time consuming to make sure nothing is missed or messed up. The battery supplier puts all the risk on the buyer. And it's costly to ship a 'mistake' back, and hazmat issues with shipping firms create lots of risks and confusion for individual consumers.

Millions of ebikes are sold worldwide. The volume is likely there for someone who gets this right. Meanwhile the ebike makers tend to charge a significant premium for their replacement batteries. Ripe for some real competition. With the internet and advanced consumer goods distribution these days, this should be a no brainer.