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
> A good solar system is one that meets //your// needs. -- jimindenver((paraphrased))
> "...trying to t... rvliving.com/forums/Thread-Too-much-or-too-little-Solar?pid=116253#pid116253)) (Bob from Cheap RV Living)
> Setting up solar that //works// is easy. Setting up solar that //works well// and //under challenging conditions// is mu
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
t can affect that." -- Cariboocoot((https://forum.solar-electric.com/discussion/comment/152013#Comment_152013))
====== Factors affecting solar panel output ======
For various reasons **it wil... under great conditions, and much less under poor solar conditions. And about half of that in winter.
=... location and season both have profound effects on solar harvest. [[opinion:frater_secessus:panelsizesfori
keep it at the set point voltage. -- [[https://diysolarforum.com/threads/controlling-charge-from-multiple... scenarios output might be limited by [[https://diysolarforum.com/threads/many-here-say-that-an-alternator... outside the case to reduce this heat((https://diysolarforum.com/threads/many-here-say-that-an-alternator... ered on the alternator output DC bus.((https://diysolarforum.com/threads/alternator-dc-dc-charger-compare
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... -daily**, or live in an area of poor [[electrical:solar:output|insolation]].
For many people [[electri
arger
* charging by [[electrical:12v:mandatory_solar|alternator alone]] but not driving some days
* ... thinking in fractional days =====
[[electrical:solar:gentle_intro|Solar]] and [[electrical:12v:alternator|alternator]] charging are different.
==== alter... ther than 2.0 to get through the weekend.
==== solar ====
In any given 24hr period [[opinion:frater_s
hade will be complicated." -- sensij((https://www.solarpaneltalk.com/forum/solar-panels-for-home/solar-panel-installation/365350-understanding-shade-and-low-light-conditions?p=365396#po... ave surprisingly dramatic effects on [[electrical:solar:output|panel output]]. Perhaps counterintuivitely
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
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
controller for maximum power ======
[[electrical:solar:charge_controller#pwm|PWM controllers]] are inexp... limited when battery voltage is low ([[electrical:solar:charge_controller#mppt|MPPT]] output is unaffecte... ystem. It assumes the 'dweller owns [[electrical:solar:pwm configurable|a configurable PWM controller]].... of this information also applies to [[electrical:solar:shunt_tweaking|tweaking shunt controllers]].
=
====== solar assumptions ======
Assumptions made in the [[electrical:solar:pvwatts|PVwatts]] estimate:
* flat-mounted((no... with space underneath them to allow [[electrical:solar:output#panel_temperature|cooling]]))
* with an unobstructed view of the sky (no [[electrical:solar:shading|shade]])
* on an MPPT [[electrical:sola
