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Old 10-31-2011, 09:59 PM   #10
ZekenSpider
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Join Date: Apr 2009
Location: Chandler, AZ
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Quote:
Originally Posted by rumbleweed View Post
Jerry
Most computer controlled battery maintainer units recommend not extending the connection to the battery as it meters the charge current based on the voltage measured at the charger end of the circuit. The introduction of a Bargman and the wiring in the TM would introduce drop and disrupt the performance.
Generally true for multi purpose chargers (especially Bulk and Absorption mode) but not really a problem at the low currents utilized by a dedicated maintainer type charger such as the Battery-Tender-021-0128-Plus-Charger (1.25 Amp max but only 0.010 to 0.03 Amps during maintenance). Voltage drop becomes a problem only at higher current charging.

If the battery is located at the back of a 20 ft TM, the voltage drop from one end of a 40 ft #12 gauge wire run (20 ft. each way) at .03 Amps is less than 0.01 Volts. Even at 1.25 Amps the drop is only 0.08 Volts. If the wire is #10 gauge (like it is in my TM), the 1.25 Amp drop is only 0.05 Amps.

IMHO this is not a problem for any one using the 1.25 Amp Battery-Tender-021-0128-Plus-Charger. It is a problem for someone using something like the DieHard Microprocessor - Controlled Battery Charger and Tester, 80 Amp Engine Start, Sears Item# 02871225000, Model# 71225.

Respectfully,

Jerry
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