Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Charts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Outdoor & Recreation
Campers, Vans & 4WD's
Solar Panels - Information and Questions
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Prospecting Australia:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Simmo" data-source="post: 431699" data-attributes="member: 4105"><p>You must not have explained it properly to your auto-lecky, or you need a new one!</p><p></p><p>Where Nightjar is mistaken is putting the two panels in series gives 7 amps, that is incorrect.</p><p></p><p>Nightjar is talking no doubt about a good MPPT charge regulator, that you could indeed wack between a 24v panel and a 12 v battery.</p><p></p><p>However, a 12v panel rated at say 24 watts, or 2 amps, in parallel with another, 12v/24 watt panel would give 12v at 48 watts, or 4 amps.</p><p></p><p>Wire them in series, you will get 24 volts, at 24watts, and 2 amps... but feeding 24 volts into an mppt regulator connected to a 12v battery, will convert that back to 12 volts, and double the current, as the load is the same. (V=IR) so minus inefficencies in the regulator, you will be back to 4 amps.... maybe..</p></blockquote><p></p>
[QUOTE="Simmo, post: 431699, member: 4105"] You must not have explained it properly to your auto-lecky, or you need a new one! Where Nightjar is mistaken is putting the two panels in series gives 7 amps, that is incorrect. Nightjar is talking no doubt about a good MPPT charge regulator, that you could indeed wack between a 24v panel and a 12 v battery. However, a 12v panel rated at say 24 watts, or 2 amps, in parallel with another, 12v/24 watt panel would give 12v at 48 watts, or 4 amps. Wire them in series, you will get 24 volts, at 24watts, and 2 amps... but feeding 24 volts into an mppt regulator connected to a 12v battery, will convert that back to 12 volts, and double the current, as the load is the same. (V=IR) so minus inefficencies in the regulator, you will be back to 4 amps.... maybe.. [/QUOTE]
Verification
Post reply
Outdoor & Recreation
Campers, Vans & 4WD's
Solar Panels - Information and Questions
Top