olbigtenor:
...
> Commonly available reasonably priced items please - - - - need an
> quote or a hard numbers source - - - not an assertion.
...

Are you asking for a quote with the intent to buy ?
I have a friend/collegue who has just started up selling batteries with
drop shipping [1], I don't know if he is willing to sell to your
country, but do you want his contact info, or shall I ask him to contact
you (I don't konw if has set up any web site yet) ?

Also I have a possible customer to me (in electronic design) who sells
bms [2], mostly for boats, see https://batterybalance.com/.

Regards,
/Karl Hammar

[1] https://en.wikipedia.org/wiki/Drop_shipping
[2] https://en.wikipedia.org/wiki/Battery_management_system

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