DOGETUNE BATTERY JOURNAL
Battery guides and workshop stories
Build photos, battery questions and buying guides.
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Stepped modules: measuring each level
A stepped outline changes more than the case. Boards, cables and the route into the compartment need space too.
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What goes into a battery build besides cells
Nice casing, finished photo, done? Before the lid goes on, there’s quite a lot left to look at.
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“Yesterday still okay.” Today the battery looks different.
Something has changed. The answer isn’t to charge it one more time and see whether it behaves.
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The BMS says 100A. The whole battery says what?
One big number on a BMS, suddenly the whole setup damn power. Wait. We haven’t even asked about the cells yet.
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Used battery, fast deal. Bro, ask these first.
Listing say good condition. Seller say still strong. Ok, but what do we actually know about the battery?
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Looking for battery cells?
Need a loose cell, or need a battery for ur bike? Different thing. Let’s get u to the right one.
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Which charger does my battery need?
The plug goes in. Good. Now check whether the charger is actually meant for that battery before switching it on.
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Planning an external battery?
Before the battery size, show us where it will sit. Mounting, moving parts and the cable route need space too.
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A battery for a different-shaped space
Got a step, a narrow neck or a frame tube in the way? Show us the whole shape before deciding how much battery can go inside.
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What do the battery numbers mean?
V, Ah, A. Three different things. Don’t compare the biggest number on each listing and hope they mean the same thing.
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The photos that help us check your battery
We can see ur bike very clearly. The tiny plug in the corner? Cannot. Here’s what to photograph so we can actually help.
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Will the battery fit the space?
“Roughly this big” is how u end up with a battery that fits until the lid goes on. Measure the usable space, including the bits in…
Got a listing or a label to check?
Send it over. Tell us what u ride and what u want to know.