Involvement:Expert (understands the inner workings) - Ownership:more than 1 month
the battery holder is functioning as it supposed to. The metal prongs are made from good quality metal shiny metal. doesn't rust easily. good contacs. it fits protected 18650 batteries well. it maintain good contact even I shaked the holder with considerable force.
Quality of the plastic is strong enough to hold the battery safely and could last for 3-5 years if they are not subjected to direct sunlight / very dry environment
you probably need to put some layer of metal to make the battery fit in nicely if you use unprotected 18650.
The red & black cables for the + & - terminals are very thin. Probably only good for application not more than 500 mA.
I think the cable thickness and the way it was mounted to the + & - terminal could be improved further
it does it's job and I could only find it hear with this reasonable price
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