Model Boat Mayhem
Mess Deck: General Section => Model Boating => Topic started by: tigertiger on September 05, 2006, 11:52:13 am
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What battery choices do people recommend.
What give longest usage?
What gives most power?
Duracell verses Nimh
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Tigertiger, it does depend on various technical circumstances. First of all, if you draw high Amps a Nicad or NIMH is definately better as a Lead-battery. Then calculate your maximum weight which you may add to the boat, left for accus or batteries. I.e a Torpedoboat scale 1:100 with an deadweight of about 1,5 Kilogramm it will be difficult to place a lead-battery inside. In this case NIMH is by it`s ratio Weight/capacity first choice. If you have a merchantman, which will draw about 3, 4 Amps and you have some deadweight left of 6 or 8 Kilograms- I think that a lead-battery is much better as you may have more capacity and it is cheaper. The higher the capacity raises- the cheaper lead- batteries will be in their ratio. I.e. just calculate 12V 7,0 Ah Lead Battery to a NIMH-Accuset, 10 cells 7,0 Ah. But if you draw i.e. 15 Amps for the motor, the lead-Battery will break down very shortly. Then a NIMH is first choice.
Do you have any particular example in mind?
Hope this was out of any help.
Jörg
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Tigertiger
You mention duracell v nimh. The duracell will have a vastly higher capacity, but will be unable to deliver anything like the current of a re-chargeable. If you are using them for drive power, of the two, nimh every time. For powering transmitters and receivers, its a matter of personal choice, but I think that after paying for a couple of sets of primary cells, I would look very seriously at re-chargable types, especially knowing my trick of accidentally leaving things switched on...