Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed 40Amp MPPT Solar Controller 100V Input Tracker for Lithium Iron Phosphate Lifepo4 (Lead Acid AGM) Charger, Solar Panel Maximum Input 520W/1040W (12V/24V) Automatic Specification Display Type LCD Color K40A Brand OOYCYOO Country of Origin China Item Weight 2.93 pounds Voltage 24 Volts Package Dimensions 8.31 x 8.31 x 3.23 inches Manufacturer OOYCYOO 8.31 inches x 8.31 inches x 3.23 inches. Weight: 2.93 lb Item Description MPPT charge and discharge solar controller; 40Amp; Battery type: LiFePO4, AGM is compatible with more battery charging; LCD display (automatically switch to display more parameter information); Prevention: Overcharge, overdischarge, overload, overheat, reverse polarity, lightning strike and other protection functions; Worry-free installation and after-sales guarantee: professional technical team guides installation; Amazon logistics warehouse logistics; This is a MPPT solar charge and discharge controller; the charging efficiency is 15%-25% higher than that of ordinary ordinary solar controllers; the MCU precisely controls the MOSFET switch to control the battery charge and discharge, effectively extending the battery life; Product parameters Rated charge current:40A 12V battery system:open circuit voltage ?48V(Voc) maximum. PV input power:520W 24V battery system:Open circuit voltage ?96V(Voc) maximum.PV input power:1040W System nominal voltage :12V/24VDC Auto identifying Battery voltage range: 12V/24V Max.PV open circuit voltage:96VDC Power terminal:8AWG Dimensions:11.8 * 7.87 * 3.95 (in) Weight: 5.6lb Warm Tips: Battery must be connected first ! Never connect the solar panel array to the controller Without/Before a Battery. Never connect any inverter/ wind/ Alternator/ Charger into the charge controller! Ensure the battery voltage is enough.( 9V) Never exceed the max input power/Voltage of your controller. Package List: 1 x 40A MPPT Solar Charge Controller K40A-new 1 x Temperature sensor 1 x User Manual (English) 1 x screw Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? We appreciate your feedback and our system will automatically leave feedback for you after bid ends. ? Please contact us through message center if you have any problems, we will always try our best for 100% customer satisfaction. Payment Options Shop With Confidence