Decathon bike. Adding a second battery?

Electrically assisted bikes, trikes, etc.
adri123
Posts: 1
Joined: 4 Jun 2020, 4:02pm

Decathon bike. Adding a second battery?

Postby adri123 » 4 Jun 2020, 4:04pm

Hi

Thinking of getting a decathlon e-st520.

Would it be possible to add a second battery? I was thinking of getting one of the rear rack mounted ones.

Any thoughts appreciated.

Adri

hemo
Posts: 768
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: Decathon bike. Adding a second battery?

Postby hemo » 4 Jun 2020, 8:31pm

It might be possible if the electronics are quite basic and have no CANbus style handshaking between battery and motor/controller, a rack will change the ride style/feel of the bike esp if you use it for off road.

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al_yrpal
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Joined: 25 Jul 2007, 9:47pm
Location: Cully
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Re: Decathon bike. Adding a second battery?

Postby al_yrpal » 4 Jun 2020, 8:32pm

I'm 99% sure you cant do that.

Al :wink:
Touring on a bicycle is a great way to explore and appreciate the countryside and towns you pass through. Make a difference...

borisface
Posts: 134
Joined: 19 Feb 2010, 3:48pm

Re: Decathon bike. Adding a second battery?

Postby borisface » 5 Jun 2020, 10:37am

Probably your best option would be to buy a spare battery from decathlon when you buy the bike, if they will sell you one, carry it in a saddle bag and swap over when needed.

hemo
Posts: 768
Joined: 16 Nov 2017, 5:40pm
Location: West Sussex

Re: Decathon bike. Adding a second battery?

Postby hemo » 5 Jun 2020, 10:52am

The battery charger will tell you if it is possible to wire in a another battery but you would need to know if the pin connector is two wire or four wires.

fivebikes
Posts: 119
Joined: 9 Mar 2008, 12:46pm
Location: West Yorks

Re: Decathon bike. Adding a second battery?

Postby fivebikes » 5 Jun 2020, 11:40am

Have looked at that bike too.....
Spare batteries are available and could be carried on rides and swapped if needed.
https://www.decathlon.co.uk/battery-36v ... 37311.html

borisface
Posts: 134
Joined: 19 Feb 2010, 3:48pm

Re: Decathon bike. Adding a second battery?

Postby borisface » 5 Jun 2020, 8:10pm

2 batteries = 800+w/h for under £2k is going to get you some very serious range. Maybe 100 miles.