E-bikeboard Skyliner 2008

[ElectricJack2250]

Hi everybody, hope all is going well with you guys. A friend of mine is asking for some help with his E-bikeboard Skyliner that he got back in 2008. The Lithium ion battery pack no longer hold a charge and he doesn't quiet have the funds to buy a new pack. I'm planning to just use SLA batteries and match the voltage on the Lithium pack. Would this work? I have experience working on electric scooters but they all use SLA batteries. Any input would be greatly appreciated..

 

[ElectricJack2250]

sorry, i just realized i posted this not on the appropriate forum...

 

[ElectricJack2250]

Hi everybody, hope all is going well with you guys. A friend of mine is asking for some help with his E-bikeboard Skyliner that he got back in 2008. The Lithium ion battery pack no longer hold a charge and he doesn't quiet have the funds to buy a new pack. I'm planning to just use SLA batteries and match the voltage on the Lithium pack. Would this work? I have experience working on electric scooters but they all use SLA batteries. Any input would be greatly appreciated..

 

[ElectricJack2250]

This is the right forum now.. Any thoughts would be of help. Thanks!

 

[metinoheat]

Im not an expert on lithium but i do know a bit about lead acid. I think you have to look at the characteristics of the two batteries including discharge curves. While the voltages might be the same, the output amps of the lead acid battery will likely be much less than the lithium battery. One important thing to note about SLA batteries is that the capacity decreases with increasing discharge rate. for example at C/6 (C is the total capacity in Amp-Hours case you didn't know) you would have lets say 100 AH but at C/2 you might have 80 or less.

From my understanding, lithium batteries have a similar problem though it is for different reasons but it is much less significant than it is for lead acid batteries.

So what should you do? check the output current that the bike will draw and try to size the SLA battery accordingly. Usually the SLA battery will come with a capacity at one or two different discharge rates. make sure that, at the rate you are discharging (how much current or power you are drawing) you will have enough capacity to have decent ride-times.

My two cents

 

[made_in_the_alps_legacy]

I did not know this vehicle before

I could read the battery specification at this link : http://www.e-bikeboard.com/fr/produits/skyliner.html

"Lithium-Ionen mit 56 Samsung ICR18650-22P Zellen, 58.8V (14S4P), je 3,4 kg, > 8,4 Ah, Spezial BMS mit Parallelschaltung-Steuerung und Einzelansteuerung der 5-fach LED Energieanzeige, abschliessbares Alugehäuse, Schnellwechselsystem, Zusatzakkus parallel verwendbar"

- you might find help posting those specs in the "battery technology" section, it's maybe not that expensive to get a replacement pack, you would probably also get help to repair the actual pack (maybe only few cells are creating the trouble...)
- as far as going to SLA, it's possible, but a kind of technology step back considering actual LiIon

anyway, the main concern in such case is : only the controller decides which voltage it can handle, so it's common to start from the controller specifications and trace back which battery lay out it can handle.