Re: Six volt bilge pump

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July 27, 2015 at 3:26 am #20981
legendre
Participant
    quote Outboard315:

    So the first question is how well does a standard 12v pump run on 6 volts.

    In all likelihood, similar to how well a 12V light bulb runs on 6V.. dim & crappy at best. Recall that in +most+ applications, power squares with voltage – so cutting a 12V device down to 6V will supply it only one-quarter of the power it had at 12V.

    He is best off either locating and using a 6V pump, or purchasing a boost converter and running a modern 12V pump. I’d prefer the former, if at all possible.. but the later also has its charms, like having 12V on-tap for all kinds of other uses.

    BTW, how does an 8V lead-acid battery work? They are 1.5V per cell, so you can get 6V, 7.5V or 9V – but not 8V per se. Perhaps those "8V" batteries are actually 5-cell units with 7.5V?