Month: June 2020

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Chinese Battery Charger

Post author By David Dobson
Post date 28 June 2020
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I pulled apart a Chinese 18650 charger to have a look. These were the problems found.

Chinese charger showing information label and PCB

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Chinese timer relay

Post author By David Dobson
Post date 23 June 2020
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Is this the result of buying a cheap timer Chinese relay off Alliexpress?

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Telstra VoIP modem

Post author By David Dobson
Post date 22 June 2020
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I need a VoIP system for my grandmother that doesn’t cut-in and out. Currently I have a Cisco VoIP adaptor behind a Telstra Smart Modem Gen 2 (DJA0231). The problem that is happening is the phone is not clear and garbled, sometimes not being able to connect to the SIP server. I have theory that the modem is causing the connection problems, but I don’t necessarily want to replace the Telstra modem as it has 4G backup for DSL and voice. It also has VoIP, but being a Telstra branded modem, it is all locked down.