How can I wire in a second battery?

[MattBrawn]

What would be involved with adding a second battery pack to a HeyBike Brawn? A 48v 18AH battery is what this has.

I understand the process of soldering and routing the wires and mounting the additional battery but I'm not sure if this will create any problems. Isn't it as simple as wiring an additional battery in parallel? Maybe I should just spend the $750 for another battery pack instead of trying to save money and messing something up?

-Matt

 

[HumanPerson]

Welcome to the forums

There are a few brands of the dual battery discharge balancers.
Some can be used with different voltage batteries but i'm sort of scared and only use the same voltage battery for now LOL

Store - ElectricAllWheel

Store Dual Battery Discharge Balancer Kit (40A) (Aventon Fit) The recommended second battery for your 48V 750W or 500W Rear Hub Motor electric bike is a 48V 10Ah Hailong Battery from Amazon. It is compact and easy to attach to… Shop Now Dual Battery Discharge Balancer Kit (40A) (Rad, Himiway...

electricallwheel.com

E-bike Polar Bear Dual Battery Combiner 50A (2 in 2 out) With 2 XT 60 Cables — Fat Tire House

This dual battery setup for most of ebike up to 2000w During use the battery with the higher voltage will power the bike until such time when both batteries have equal voltage, then both batteries will power the bike simultaneously, giving you the combined current of both. The batteries should have

fattirehousela.com

Battery Blender™ - www.sparkcycleworks.com

Add a second battery to your electric bike today! NOT COMPATIBLE WITH REGEN! Blend any 2 batteries using even different voltages and chemistries Compatible with 72V and Under XT60 Connector: 30 Amp Rating/ 35Amp Rating Experimental (must allow adequate air flow around device)

www.sparkcycleworks.com

 

[MattBrawn]

Ohhh wow, interesting! Alright, lots to learn.
Thank you sir.

 

[TheEbikeGuy]

If I had this bike I would mount a Hailong 48v 17-20ah battery to the downtube if there are two bottle mounts it would look very clean like the dual battery Eunorau Defender S or Biketrix Hub Duo and use SparkCycleWorks.com battery blender. It’s very small and may even fit next to the controller in the compartment near the cranks. If there’s no bottle screw mounts consider a 48v 20ah triangle battery it might fit or a rear rack battery.

48v 17ah example:

48V 17Ah Panasonic Cell Lithium Ebike Battery Hailong for 1000W Motor Down Tube | eBay

Fit for motor : 48V 350W 500W 750W 1000W (can't exceed 1092W). YAMAHA ， Panasonic. , YAMAHA ， Panasonic. Our battery can fit most motor kit ,for example: Bafang, Voilamart, CSC, Tongsheng,Ebikling, but exclude these four : BOSCH.

www.ebay.com

 

[HumanPerson]

Welcome aboard @TheEbikeGuy