Hi everyone, I’m struggling to find a suitable battery pack to fit within my 17” Rockhopper frame and am wondering what your thoughts/ experiences are regarding a good comfortable backpack to carry the battery. Don’t like the look of the rack mounted ones, so wondered if the weight on the shoulder straps could be a problem after an hour or so or does the weight of the pack interfere with stability ? All views appreciated, thanks Wafty.

you can but there not cheap just depends how big the battery is.

 

https://www.merlincycles.com/evoc-fr-trail-e-ride-protector-back-pack-192227.html?utm_source=PHG&utm_medium=AffiliateMarketing&utm_campaign=phg-GB&ucpo=114062&source=PHG

 

https://ebike-mtb.com/en/the-best-emtb-backpack/

Edited March 19, 20215 yr by soundwave

Put a 4kg weight in a back-pack and see how far you can ride your bike before you want to give up. I have a rockhopper frame with a dolphin battery in it. Before that, it had a tubular one. I think it's a 17" frame, though might be the next size up.

Would a bottle battery fit or a frog type on the seatpost?

https://www.pedelecs.co.uk/forum/threads/frog-ebike-battery.39924/#post-593157

Did you find a backpack for your battery? Let me know.

No my friend, l gave up on the idea after putting the equivalent amount of weight in a very comfortable backpack l own. Was fine to begin with but after riding for half an hour or more it became apparent there would be problems so gave up on the idea.

Back pack batteries are a non starter and a bad idea from the off.

I use batteries in the backpack , but the battery is stuck in the support made of Styrofoam , so that it does not move and ensures a better position so that it does not hurt , the battery in a backpack depends on its weight , the heavier it is , the less time it takes you will be able to take it , I use it for a maximum of 2 hours , above that I do not advise to use

No my friend, l gave up on the idea after putting the equivalent amount of weight in a very comfortable backpack l own. Was fine to begin with but after riding for half an hour or more it became apparent there would be problems so gave up on the idea.

 

Strange, I got a Rucsac from Go-Outdoors, that has side pockets big enought to take my spare shark type battery. The extra weight in the rucsac, 5lbs, caused me no problems at all.

 

But having carried much heavier rucsacs on a regular basis when walking, mountaineering and backpacking since the early 70s, maybe I just got used to it.

I wouldn't worry so much about finding some unusual backpack allowing you to carry a battery, etc.

I wouldn't worry so much about finding some unusual backpack allowing you to carry a battery, etc. Buy a military backpack at a local hunting store. Believe me. It is so comfortable and big that others don't even stand next to it regarding its quality and reliability. I have two such army backpacks that I always use, even if I go outside. Not only do they look great, but they are also very reliable and effective. I also recently learned about child-resistant mylar bags, and I think to buy such a thing on this site -- https://www.interplas.com/stand-up-bags/child-resistant-mylar-bags, and then you never know if my children will find medicines at home.

Buy a military backpack at a local hunting store.

 

Not so many 'hunting' stores in the UK, not a popular activity.

 

I know the type of rucsac you mean though and they can be found in the UK in what is often loosly referred to as 'Army Surplus' stores.

Do a search for the badger crash thread, see what happens to your wrists when you land with all the extra weight on your back. Maybe wait till all badgers are culled!

Do a search for the badger crash thread, see what happens to your wrists when you land with all the extra weight on your back. Maybe wait till all badgers are culled!

 

I am sure there is a measurable effect, but how significant is it ?

 

The rider with the rucsac on might already weigh 75kg, so I wonder how much worse things would be if, as a result of carrying even a 4kg battery, they weighed 79kg ?