These are mods i have previously done but wanted to make a thread for as i may be doing more at some point in the future.
Xtar MC1 Plus with a voltage indicator and current selector switch. I changed the sliding internal current switch to an external clicky so i can control whether it does the 500mA or 1A charge rate.
Normally this charger only charges cells longer than 53mm with the higher current setting.
I find this useful if i want to charge a 16340 or 18350 IMR cell a bit quicker.
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Klarus CH1 with voltage indicator, battery retention bar and built in charging lead.
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DQG Brass 10180 & 10250 Charger
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TP4056 Charger Board
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Charger Tin Build - LM2596 CC/CV
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Powerbanks etc
USB tester, built in lead
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Cylindrical 18650 Powerbank, built in lead
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Square 18650 Powerbank with meter & built in lead
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Xiaomi 5000 Powerbank, built in lead
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Xiaomi 10400 Powerbank, built in lead
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Battery Drill Voltage Meter
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Noctigon Meteor TP5000 2A Charger
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