EPEVER 30A MPPT Solar Charge Controller 100V input Tracer A Series 3210A With LCD Display Advanced Charge Control Technology: Maximum Power Point Tracking (MPPT) with high tracking efficiency no less than 99.50%; peak conversion efficiency of 98%; Ultra-fast tracking speed; accurately recognizing and tracking of multiple power point; 3-stage charge with PWM output Easy Monitor and Operate: Multi-function LCD displays system information intuitively; User programmable for battery types, load control etc, via PC software or remote meter MT-50 ASIN: B06W9K472J No Worries with Electronic Protections: PV reverse polarity protection; PV short circuit protection; PV over current alarm protection; Battery overcharge protection; Battery over discharge protection; Battery reverse polarity protection; Load short circuit protection; Load overload protection; Overheating protection Build-up: with 12v /24v battery (Automatic system voltage recognition); charged by solar panels according to the system, recommend Acopower 100Watt ASIN: B01586LFJ0 or all black panels ASIN: B01G53TUIS 100% Money back for any reasons you are not satisfied. 18 Month Warranty. USA Based More than 5 Years Solar Industry Company provides you excellent customer service and technical support.