[C320-list] Alternator upgrade
Graeme Clark
cg at skyflyer.co.uk
Tue Aug 25 13:37:24 PDT 2020
Save your money and spend it on an advanced charging system. Standard alternator output is designed for cars where the battery depletion in starting is quite small and it isn’t even important that 100% charge is restored. So long as you keep it at 80% or more you’ll get a good start next time
Marine use (at least on sailboats) requires a full charge in the house bank during a relatively small amount of time motoring
Your standard alternator is probably well up to the job if the alternator field vintage is changed to increase the alternator output voltage
A smart charging system (Stirling, Adverc) will control the alternator output
Theres a great explanation online which I’ll try and find and post in a further reply
Graeme
Sent from my phone. Excuse typos!
> On 25 Aug 2020, at 21:26, kskis at aol.com wrote:
>
> Hello all. I am considering an alternator upgrade for my Yanmar 3gm30f orignal equipment with (2) Lifeline 4DA AGM batteries 5 years old. Considering also adding a starting battery and Balmar SG200 Battery Monitor. Later on add some solar panels to my bimini. I find it currently takes much too long to get a full charge (maybe the alternator isn't fully functional now) and I want to make sure I can run my fridge when cruising for 2-4 days at a time. I was recommended a Balmar 120Amp Series 6 with K6 serpentine kit but it seems like overkill and I worry about depending on a voltage regulator to reduce the extra load on the engine (as well as the amperage being more than I'll ever use). Any thoughts out there? Has anyone done this kind of conversion with success? Thanks. Neil Kornblatt Harmony #973 2004.
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