Which controller is better ?

PWM solar controller or MPPT solar controller ? 

As a professional supplier of digital solar charge controller , one of the most frequent question we got is if I choose the PWM solar controller or the MPPT solar charge controller for my RV solar system ? 

Our answer for this question is depends on how big RV solar system you are building ?  Compared with the MPPT solar charge controller , customer normally will spend less money for a PWM solar controller , but a real good quality MPPT solar controller will can help to instore more

power in the battery .  If you have a small RV solar system within 200W , we think the PWM controller will a better option , but if you built a RV solar system with solar panel like 400W or above , the MPPT solar controller will be recommended .

Melin Sunergy providing both very nice quality PWM and MPPT solar charge controller for our customer . With Flush Mount design to have nice looking after installation , target for multiple types of battery , the special charging technology we developped for both lead acid and Lithium batteries , help our customer maintain theirs battery with much longer life than other solar controllers in the market .