NINGDEFLY 10A 20A 30A Solar Charge Controller 12V/24V PWM Solar Charge Controller with LCD Display USB Port Suitable for FLD/LiFePO4/SLD/GEL Compatible Battery Types: Compatible with AGM, Gel, Sealed Lead Acid, Wet, Lead Crystal, Li-LION Series and LifePo4 batteries, very suitable for charging a variety of battery types, including starter, deep cycle, marine, power sports, etc. Efficient three-stage PWM regulation charging: Direct charging, boost charging, floating charging three-stage PWM regulation charging method, with intelligent protection function to prevent overcurrent, short circuit, open circuit, reverse, low voltage and overcharge, PWM technology extends battery life by minimizing overcharging and discharging. Widely used: Compatible with 12V and 24V systems, maximum discharge current 30 A (automatically adapt according to system voltage), intelligent memory of various parameters, no need to reset parameters when the battery is exhausted. USB output maximum 5V/2A, charging mobile phones, tablets, PCs. Reliable materials: PC+aluminum alloy, the upper cover uses new PC material, no odor, more assured. The thickened aluminum alloy metal back plate protects the internal components to a greater extent, and effectively dissipates heat to prevent the controller from overheating and damage. This charge controller is designed for outdoor use and can withstand harsh weather conditions to keep your solar system running smoothly. Protection function: Built-in overvoltage, short circuit and reverse polarity protection devices ensure safe and reliable operation. Easy-to-read LCD screen displays important information for quick evaluation. Shipping We offer FREE shipping on all orders in US We ship within One-Three business days of payment, usually sooner. We use a selection of shipping services such as UPS, FedEx, USPS etc We offer free shipping to the lower 48 states and ship within 1-3 days of payment, usually sooner. For shipping outside of the continental USA International customers are responsible for all duties and taxes. Return You can return a product for up to 30 days from the date you purchased it. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. 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. Payment We accept payment by any of the following methods Please pay as soon as possible after winning an sale, as that will allow us to post your item to you sooner! Feedback Customer satisfaction is very important to us. If you have any problem with your order, please contact us and we will do our best to make you satisfied. 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. Contact Us If you have any queries, please contact us via. We usually respond within 24 hours on weekdays. Please visit our store to check out other items for sale! Thank you for shopping at our store.