[time-nuts] Oscilloquartz BVA has been sold. Thank you all who expressed an interest.

[Hal Murray]

> Real Telco gear runs from -48VDC fed from, literally, tons of lead-acid batteries.

I remember from ages ago some comment about telcos using iron rather than 
lead.  Google finds Edison batteries, nickel-iron.  Long life being their 
primary feature.
  https://en.wikipedia.org/wiki/Nickel%E2%80%93iron_battery

12V, 100AH, $1,093
  https://ironedison.com/nickel-iron-ni-fe-battery
That's their smallest size.

I think they require maintenance -- fill them up occasionally.

What's the lifetime of a modern lead-acid battery that a telco would use?


-- 
These are my opinions.  I hate spam.