Recharging batteries: lack of a common visual vocabulary

This evening, I am recharging my batteries.  No, that is not
a metaphor.  I have a bunch of Li-ion and NiMH rechargeable
batteries.  In anticipation of an expedition into Wessex,
I am recharging them.

The dedicated Li-ion batteries for the Nikon D-200 SLR and the
Panasonic NV-GS320 DV-cam.  And the AA and AAA "Hybrio" NiMH
cells that I use for my digital audio recorders, flashgun and
LED torch (I have two chargers for such batteries).

One of the chargers has a green LED that stays on until the
batteries are charged, then it goes out.  One has an orange
LED that flashes until the batteries are charges, then it
stops flashing.  One has a light that simply stays on all
the time to show the batteries are connected to the circuit,
and you have to guess whether the batteries have been charged
or not.  One charger has a light that starts out one colour,
and then changes to another colour when the battery is charged.

"Why oh why oh why oh why..."  can't we have some kind of
visual vocabulary standardisation in this area? (!*@?)

Conrad

(Who, mounted on a charger, fears a charge of hungry Li-ions)
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