DIY Off-Grid Solar Power
Marketing.  I would take everything on this website with a grain of salt.  Take it from someone who has actually built an off-grid system, one that is relied upon for 24&#x2F;7&#x2F;365 living rather than mere vacation cottage.<p>For example: OP re lead-acid battery options:<p>&quot;Heavy, cheap, easy to use and they work! Typically will last about 3-5 years. Slower charge rates than lithium, much heavier, and they cost  way  more in the long run.&quot;<p>That is just plain incorrect.   Lead-acid batteries regularly last a decade or more and are far cheaper than any lithium option at a given capacity.  Look at nearly every 12v car or boat battery.  You don&#x27;t see those being replaced every 3-5 years.  It is old reliable tech that just works.  And, at a given price point, they can charge faster than lithium too.<p>The downside of lead-acid?   There is little profit to make in selling them. All the patents have expired.  They don&#x27;t need software to control them.  They are mature, centuries-old technology.  A thousand companies are making lead-acid batteries and you can get them cheap.  They weigh more, but for residential installation that isn&#x27;t an issue.<p>The upside?  Whereas lithium packs are a nightmare to recycle, lead-acid batteries hook into an established and profitable recycling system.  They are the greener alternative to anything containing lithium.