This week on the channel +18K views this week

EEVblog2 brings a reluctant Tektronix battery back to charging

Dave's only new upload returns to the electronics bench, with an oscilloscope that reports an empty battery and refuses to charge it.

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EEVblog2 Story of November 13, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

Tektronix 2 Series Scope Lithium Battery Recovery

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0:28The scope reports an empty battery and does not charge it through its internal system.
2:16A multimeter reads zero volts at the removed pack's terminals.
3:40Dave applies an external bench supply to bring the pack above its undervoltage lockout threshold.
5:58Back inside the scope, the battery is recognized and internal charging resumes.
7:06Without mains power, the scope briefly runs before shutting down because the battery remains low.

The oscilloscope says zero, and plugging it in changes nothing. Dave has a small workbench mystery for EEVblog2: a Tektronix 2 Series instrument he hasn't used in a while, with a battery its own charging system won't revive.

In "Tektronix 2 Series Scope Lithium Battery Recovery", he removes the pack, checks its terminals and uses an external bench supply before returning it to the instrument. The useful moment comes when the scope recognizes the battery again and resumes charging. Unplugging the mains later shows the limits of that recovery: it briefly runs on battery power, then shuts down with little charge available.

That distinction matters to the conversation underneath. Viewers are discussing whether deeply discharged cells may have suffered damage, and what the battery's protective cutoff is there to prevent. Others are puzzling over the connector's D and C markings, suggesting data and clock connections. Getting the charging indicator back is not quite the end of the technical questions.

The upload drew about 9,000 views before its first day was over and is comfortably the busiest of the channel's highlighted videos right now. Older repairs, including a Miele washing machine and a brand-new Rigol oscilloscope that wouldn't boot, continue attracting smaller daily audiences.

EEVblog2 added roughly a thousand subscribers over the week, although its current daily viewing is below its usual pace. Nearby in size, Deck Ready is enjoying daily views more than twice its typical level. Dave's week is more contained: one upload, a stubborn piece of test equipment and a comment section checking the engineering.

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What viewers say

D and C is probably smbus Data and Clock
@inductivethinkingSee it on YouTube
I would think D/C would be Data/Clock as in I2C/SMB
@MortenHatSee it on YouTube
Nice fix. That is not dead which can eternal lie...
@KeritechElectronicsSee it on YouTube

Public comments from the video's page on YouTube