voltage to specific charging voltage [[electrical:solar:charge_controller_setpoints|setpoints]] and limit... ion as it might seem since lead-acid [[electrical:solar:status#in_absorption|current acceptance drops sub... ach day.)) This is where [[electrical:12v:alt_and_solar|a bit of solar helps with the long-duration duties]].
DC-DC chargers are often triggered by the IGN cir
onsumes **29,000**Wh of power per day.
- A 100w solar panel on an MPPT [[electrical:solar:charge_controller|controller]] will harvest an average of:
* Chi... ter kettles
* electric space heaters
* [[hvac:solar_ac|air conditioners]]
* electric coffee makers
... nvested thousands of dollars in battery banks and solar, or run a [[electrical:generator|generator]]
Ele
estyle:words_of_wisdom|Words of wisdom]]: //"Any Solar is better than no solar, but having too much solar is difficult. The best solar systems are those which can keep the batteries the happiest. Happy batteri
rested in DIY might want to read the [[https://diysolarforum.com/forums/diy-lifepo4-battery-banks.22/|DIY LiFePO4 Battery Banks subforum]] over on DIY Solar. You can also see the [[electrical:12v:lifepo4_b... cut-off, and internal heaters.
The [[https://diysolarforum.com/|DIY Solar Forums]] are a good place to check for updated info, as well as links to teardown re
h this page was written with alternator-augmented solar charging in mind, the general principles also apply to solar+[[electrical:shore_power|shore power charging]] and solar+[[electrical:generator|generator]] charging. Also... ical:12v:power_mix|Deciding on a Power Mix]].
> Solar and DC-DC alternator charging are going to be the
cted words of wisdom ======
===== a/c =====
>"[solar powered A/C is] not a lost cause.. we just seem ... erter] is rich man's game -- HaldorEE((https://diysolarforum.com/threads/anyone-running-a-ac-unit-from-a-... you use less water." -- handybob((https://handybobsolar.wordpress.com/the-rv-battery-charging-puzzle-2/))... (http://www.cheaprvliving.com/forums/Thread-Intro-Solar-Questions?pid=192079#pid192079))
> "While AGMs a
fair amount of the bulk charging done and let the solar finish it off the rest of the day. -- jimindenver... ]] batteries healthy, so [[electrical:12v:alt_and_solar|combining with solar]] is common
[[opinion:frater_secessus:pareto|about these summaries]]
===== overvi... eply discharged
* when [[electrical:12v:alt and solar|combined with solar]] or some other higher-voltag
will be difficult to tell. -- BB((https://forum.solar-electric.com/discussion/comment/191612#Comment_19... it probably would work fine -- BB((https://forum.solar-electric.com/discussion/comment/191612#Comment_19... 433MHz remote radio controlled plugs((https://diysolarforum.com/threads/what-really-requires-a-pure-sine... the 90° phase do not run well on MSW((https://diysolarforum.com/threads/what-really-requires-a-pure-sine
nsive (and maybe impossible) get Big Current with solar alone and difficult (or even impossible) to compl... on alternator alone. But [[electrical:12v:alt_and_solar|small amounts of both combine]] to make a workabl... expensive charging system.
For this reason the solar + alternator combination is the most common and e... rnator-only charging** [[electrical:12v:mandatory_solar|can work with lithium banks]] but for technical r
ouse battery]] charging sources:
* [[electrical:solar|solar]]
* [[electrical:12v:alternator|alternator]]
* [[electrical:shore_power|shore power]]
* [[electrical:generator|generator]]
* etc
Some solar installs will even have separate [[electrical:solar:charge_controller|charge controllers]] running their
voltage is rarely useful in the field since:
- solar charging alone is rarely able to hit charge curre... ade by US Battery have "U" prefixes.((https://www.solarpaneltalk.com/forum/off-grid-solar/batteries-energy-storage/14996-trojan-t-105-vs-crown-235-and-what-s-wr... stilled water occasionally.
Common [[electrical:solar:charge_controller_setpoints|setpoints]] (check yo
ne but you don't know it. Example: "[[electrical:solar:status#setups_with_no_float|my charger isn't char... ltage, float voltage, charging amps, etc))
==== solar panels ====
[[electrical:solar:panels|Solar panels]] are usually pretty obvious if you have them. They may be mounted on a rack, adhere
ay we didn't warn you about the prices]].
===== Solar ovens =====
[[https://amzn.to/2SdSc0Y|Solar ovens]] are popular with [[camping:dispersed|boondockers]] i... es the sun.
There are also plans online for DIY solar ovens like [[https://www.instructables.com/id/Purple-Fig-Solar-Cooker/|the $5 oven]].
Con: due to their surfac
t on current drawn by the house bank:((https://diysolarforum.com/threads/experiences-charging-lfp-from-al... concurrent charging source]] for an alternator is solar.
**Example**: Let's assume the same 14.0v alternator output and solar contribution that pushes up Vbatt by 0.3V
* I=... v-**13.0v**)/0.020mR = 1.0v/0.020mR = 50A without solar
* I=V/R = (14v-**13.3v**)/0.020mR = 0.7v/0.020m