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M1BYT > TECH 22.03.06 05:03l 42 Lines 2002 Bytes #999 (0) @ WW
BID : 933973M1BYT
Read: DL1LCA GUEST OE7FMI
Subj: Re: Paralel Batteries
Path: DB0FHN<DB0FOR<DB0SIF<DB0EA<DB0RES<DK0WUE<GB7FCR
Sent: 060321/2234Z @:GB7FCR.#16.GBR.EU #:34076 [Blackpool] FBB-7.03a $:933973M1
From: M1BYT@GB7FCR.#16.GBR.EU
To : TECH@WW
G3ZJO Opined with considerable skill:-
> The current under these conditions could easily be greater than the
> maximum recommended charging rate for a leisure battery.
That is not my experience....
How many times have you connected one car with a completely flat battery, to
another with a fully charged battery with the intention of jump starting one
from the other. The process of connecting them, if done with the correct
polarity will cause barely a spark. The voltage of a flat battery also quickly
rises, with very little flow of current, upon initial connection.
> The situation with a car / caravan is that there is a resistance between
> the two batteries, namely the relatively long and thin wiring. In practice
> this limits the charging current to around 7 Amps with the engine running.
There are so many connections and cables between car and caravan that I doubt
that more than 1/2 an amp flows. Certainly a lot of distance has to be covered
in order to fully charge a battery installed in a caravan. Also notice how dim
the road lights are on caravans, due to the voltage drop. To charge a caravan
battery on the move, I put the battery in my boot - thus eliminating much of
the resistance.
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º 73 from Harry, M1BYT @ GB7FCR.#16.GBR.EU º
ÌÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͹
º International Museums Weekend 17th+18th June 2006 º
º www.ukradioamateur.co.uk/imw/index.html º
ÌÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͹
º The ARC's FL/RAE courses + Newcomers Introduction º
º to amateur radio:- http://www.ukradioamateur.co.uk/ º
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º QTH: Garforth, W. Yorks.. º Timed 21:21 º
º harry.m1byt@tiscali.co.uk º 21 Mar 06 º
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