Julian’s postbag: #65 – a momentary lapse of polarity :
Lovely electronics stuff from China blown up by my extreme stupidity. Become a Patreon patron and support Julian's Postbag videos…
$21 power bank destroyed – lots of magic blue smoke
While making my latest Postbag video, I put a lithium cell into a very expensive USB power bank the wrong…
Ebay cheap nasty: #2 – 16340 lithium cell 1000mah
Just 55p on eBay (about $0.77), this 16340 lithium-ion cell is cheap and nasty. Just 288mAh measured capacity and a…
What’s inside the opus bt-c100 battery charger?
A look inside the Opus BT-C100 single-cell battery charger. Data sheets: MST9225B - http://www.mst-ic.com/Upload/datasheet/MST9225B_Rev13-19453720552.pdf AX3121 - http://www.axelite.com.tw/ProductD
Julian’s postbag: #64 – garden hose timer, battery tester
Wonderful electronics stuff from China :) Support Julian's Postbag videos via Patreon: https://www.patreon.com/julian256?ty=h New Outdoor Electronic Automatic Water Timer Garden…
Ebay cheap cheerful #1 – 53p lcd electronic tally counter
For just 53p delivered to my door, this digital LCD tally counter is pretty nice.
Julian’s postbag: #63 – sensible and silly stuff from china
Sensible and silly electronics stuff from China :) Support Julian's Postbag videos via Patreon: https://www.patreon.com/julian256?ty=h DC-DC 900W 15A 8-60V To…
Teardown: 36v 2600mah lawnmower battery
A look inside the 36V battery supplied with a low cost cordless lawnmower. Some resources: http://batteryuniversity.com/learn/article/types_of_lithium_ion https://www.reddit.com/r/electronic_cigare