opinion:frater_secessus:charging_faster
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opinion:frater_secessus:charging_faster [2020/04/18 13:15] frater_secessus created |
opinion:frater_secessus:charging_faster [2020/04/18 13:22] frater_secessus [exceptions] |
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| There is a common misperception that charging one's battery banks //faster// is //better// or worth throwing more money at. Here are some reasons it is not always true: |
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| **Lead batteries** have a maximum amount of current they will accept, typically [[electrical:12v:battery_capacity|C/3]] for AGM and C/5 for flooded. So if you have 100Ah of AGM the most it will want to take is something like ~33A. Installing 50A-100A of charging capacity won't help the battery.((it may help run loads, though)) |
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| **Lithium batteries** can slurp up current wildly, but shouldn't for their own health. Lithium lasts longest in sub-C use (ie, less than 100A for a 100Ah Li bank). C/2 (50A) is a more common limit to keep from stressing them. In commercial examples the BMS will limit current to protect the cells. A small [[electrical:12v:b2b|DC-DC charger]] can help protect bare cells from their own greediness. |
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* solar charging - sunlight is only available during a short window, as when camped in a forest canopy with a clear overhead view. Note that [[electrical:solar:output|poor insolation]] calls for [[electrical:solar:rationing#maximizing_solar_harvest|increased harvest]] / [[electrical:solar:overpaneling|overpaneling]], not faster charging necessarily | * solar charging - sunlight is only available during a short window, as when camped in a forest canopy with a clear overhead view. Note that [[electrical:solar:output|poor insolation]] calls for [[electrical:solar:rationing#maximizing_solar_harvest|increased harvest]] / [[electrical:solar:overpaneling|overpaneling]], not faster charging necessarily |
* [[electrical:generator|generator]] charging - for efficiency purposes the generator is shut down after Vabs is reached. Generators run most efficiently when fully loaded. | * [[electrical:generator|generator]] charging - for efficiency purposes the generator is shut down after Vabs is reached. Generators run most efficiently when fully loaded. |
* [[electrical:converter|shore]] charging - you only have a certain amount of time on the extension cord | * [[electrical:converter|shore]] charging - if you only have a certain amount of time on the extension cord |
* [[electrical:12v:alternator|alternator]] charging - you will driving for short periods only | * [[electrical:12v:alternator|alternator]] charging - if you will driving for short periods only |
opinion/frater_secessus/charging_faster.txt · Last modified: 2023/07/15 11:05 by frater_secessus