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MT99 Multimeter Battery Mod

R4iNER
in 3D Printing
0 0 Intermediate
This is a back cover replacement for Mustool MT99 multimeter enabling the use of rechargeable battery. (the MT77 and MT99PRO models are similar). If you're thinking about buying this kind of multimeter but the lack of rechargeable battery keeps you on the fences, here is a 3d printed case that solves that :) I wasn't too happy about the battery life given by the two coin batteries so I've made this case that houses a battery, power charger and voltage booster if needed. Those original two coin cell batteries were giving out about 6V, but it works just fine with less than that (3.7V battery). The frame has space for any battery up to 47mm X 47 mm x 8mm thickness, when using the covered version. For the second model (edge) you can use the original back cover, screwed in place with the original screws. It has the advantage of about 13 mm thickness clearance for the battery, and less printing time. Supplies list: access to a 3d printer PLA filament the 3d model files from the link 3.7v rechargeable battery Battery Charger Module with Usb port wires and soldering iron 4 screws, 15mm long - same as the original ones
mod rechargable battery multimeter mt99pro mt77 mt99 mustool
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