More Buying Choices 99.69 (32 new offers) Related searches. Ive come to the conclusion (with out anything other than anecdotal evidence to back it up ) that a rule of thirds seems sensible. WirthCo 1213.1241 20092 Battery Doctor 125 Amp/150 Amp Battery Isolator, Black. How much headroom have you got left? How much power do you want to draw form the alternator circuit and how are you going to manage it? What load on the alternator would cause heat build up at low revs with poor airflow? What is the maximum load possible - wet (Windscreen wipers), hot (aircon), dark night (All the lights) in slow moving traffic (poor airflow and low revs)
Is there a lighting circuit? Do the windscreen wipers use a lot of power. For instance lead acid batteries need regularly charging (different to always) at at least 0.1C to prevent sulphation. 300A Panel Mounted Battery Isolator Switch Continuous Rating 300 Amps 32v DC max Intermittent Rating 450 Amps Cranking Rating 1000 Amp 10 seconds Nut. There are a few different factors at play. What loads does it supply at different points in the vehicle use cycle and how much headroom have you got for charging house batteries. Need to ask the question - why does the vehicle have a 300A alternator when a commercial van has a beefy 180A alternator. Something that doesn’t appear to be mentioned so far is the load the vehicle already draws from the engine electrical system and any other power loads We are a sole-source provider for solid-state, MOSFET based diodes capable of these elevated levels of current. These numbers are pure made up and nothing to do with reality! Just to get the idea across.ĭepending on the state of charge - the lifepo4 will not only take juice from the alternator - the starter battery will provide power to.Īnd a lead battery can supply 800-1000A easy. For industrial, military, marine, and custom automotive applications where currents often exceed 300 amps, we are proud to manufacture dual battery isolators capable of handling 400 amps, 500 amps, and 600 amps respectfully. If you lithium is bigger, the total resistances goes down, if the lead is bigger the resistances goes up. This is somewhat proportional to the battery size. The resistance depends on the battery type and size. 3, Rear cover insulates terminals against any short of circuits.
2, ABS plastic housing, durable made for safety use. Specifications: 1, Design for 2 batteries, can switch to battery 1 / battery 2 separately or both and off together. In a parallel circuit, the lead battery has a fairly "high" resistance and the LFP has a low Resistance.īut the alternator sees the "Average" between those two. Ampper 12 - 48 V 1-2-Both-Off battery disconnect switch for car, vehicle, Rv and boat.
In a Vehicle the battery is connected in Parallel with the starter battery. The alternator is not directly connected to the LFP batterie. Many of the tests online are conducted wrong.
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