10 dollar solution for carrying a spare battery. Holds like concrete, I've been using it on the mountain single tracks (Singletracks Glacensis - highly recommended if you would ever visit Poland).
Even with the battery attached you can still use your panniers. But if you want to travel light, or do some MTB with light backpack for better bike handling, you can still carry your battery as shown on the pictures. The bike handling is affected in minimal way - just the weight of the battery, symatrically installed. I would not recommed extreme MTB, jumping etc. - for this kind of riding the backpack with protection plate (or the trunk of your car in the middle of the trail) seems the best.
I was considering square alu profile, mounted vertically to the rack, as the battery holder with lower centre of gravity. Hovewer the solution above is more symmetrical (for better handling), simpler and cheaper, without the need for any time consuming installation.
Even with the battery attached you can still use your panniers. But if you want to travel light, or do some MTB with light backpack for better bike handling, you can still carry your battery as shown on the pictures. The bike handling is affected in minimal way - just the weight of the battery, symatrically installed. I would not recommed extreme MTB, jumping etc. - for this kind of riding the backpack with protection plate (or the trunk of your car in the middle of the trail) seems the best.
I was considering square alu profile, mounted vertically to the rack, as the battery holder with lower centre of gravity. Hovewer the solution above is more symmetrical (for better handling), simpler and cheaper, without the need for any time consuming installation.
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