#110 Not-working eBay Light Meter: Can it be fixed?

I spotted this Light Meter on eBay listed as not working because of battery corrosion. Corrosion can often be not repairable but since this meter was very inexpensive, I decided to give it a go.

The environmental monitor series: https://www.youtube.com/playlist?list=PLXZqw8i7uFAr53Zn4-_flxTUVgJH5Gcwa

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0:00 Intro 1:00 the problem 2:00 fix 3:06 test 4:19 inside 6:26 demonstration 9:27 lumen/lux? 11:11 accuracy 11:31 serial port ... https://www.youtube.com/watch?v=MbWgEsEar4g