Both sides previous revision
Previous revision
Next revision
|
Previous revision
Next revision
Both sides next revision
|
opinion:frater_secessus:beginner_mistakes [2020/06/24 12:36] frater_secessus [thinking like an apartment-dweller] |
opinion:frater_secessus:beginner_mistakes [2020/07/31 13:47] frater_secessus [too much battery] |
==== no solar ==== | ==== no solar ==== |
| |
Having no solar at all is generally an unforced error for vandwellers. Even [[electrical:12v:alt_and_solar|adding small amounts of panel]] (100w) can make a solar, and can be added to an [[electrical:12v:alternator|alternator-charged system]] for as little as $100.((100w poly panel on sale for $90, 10A [[electrical:solar:shunt_tweaking|shunt controller]] for $10.)) | Having no solar at all is generally an unforced error for vandwellers. Even [[electrical:12v:alt_and_solar|adding small amounts of panel]] (100w) can make a big difference, and can be added to an [[electrical:12v:alternator|alternator-charged system]] for as little as $100.((100w poly panel on sale for $90, 10A [[electrical:solar:shunt_tweaking|shunt controller]] for $10.)) |
| |
==== worrying ==== | ==== worrying ==== |
* tilted panels take time to deploy, store, and interfere with your ability to leave a given location for safety or other reasons. | * tilted panels take time to deploy, store, and interfere with your ability to leave a given location for safety or other reasons. |
| |
| ==== failure to add alternator charging ==== |
| |
| [[electrical:12v:alt_and_solar|Adding an isolator]] can be very cheap and //supercharges// solar configs;((this effect is strongest on systems with PWM controllers)) if run at the right time it [[opinion:frater_secessus:panelsizesforinsolation|can double or triple the effectiveness of solar]], meaning one can |
| |
| - run more loads; and/or |
| - reduce the amount of panel; and/or |
| - use the excess capacity to extend [[electrical:solar:sizing#your_reserve_needs|autonomy]] |
| |
| |
Yes, you can have too much battery. | Yes, you can have too much battery. |
| |
Most people use lead-chemistry batteries and carrying around unneeded lead is both heavy and expensive. More importantly, **having more battery than you can charge fully and regularly** results in [[electrical:batterycide|battery murder]]. | Most people use lead-chemistry batteries and carrying around unneeded lead is both heavy and expensive. More importantly, **having more battery than you can charge fully and regularly** results in [[electrical:batterycide|battery murder]]. This is especially true for AGM batteries which typically have a //minimum// charging current requirement of C/5 (ie, 20A for 100Ah, 40A for 200Ah). |
| |
Exotics like [[electrical:12v:deep_cycle_battery#lithium_chemistries|lithium]] and [[electrical:12v:deep_cycle_battery#carbon_foam_agm|carbon-foam]] aren't bothered by partial state of charge, but they are so expensive that buying too much is a self-limiting behavior. | Exotics like [[electrical:12v:deep_cycle_battery#lithium_chemistries|lithium]] and [[electrical:12v:deep_cycle_battery#carbon_foam_agm|carbon-foam]] aren't bothered by partial state of charge, but they are so expensive that buying too much is a self-limiting behavior. |