LNEX Solar Charge Controller 30A, 5 Stage Solar Panel Battery Intelligent Regulator with LCD Display 12V/24V PWM Solar Controller for LiFePO4,AGM, Gel, Flooded and Lithium Battery "30A Solar Controller: LNEX Solar charge controller 30A With advanced MCU control pulse width modulated (PWM) technology, capable of accurately measuring current and voltage with an error of less than 1%, as well,it Can be connected to the battery permanently to keep the battery fully charged by using floating. it will also reduce water loss and help prevent the battery from drying out. 5-Stage PWM Technology: The LNEX solar panel controller equipped with advanced smart PWM technology with high charging efficiency. It provides 5-stage charging (Soft Start,Bulk, Absorption, Float and Equalization) to increases battery life and improves system performance, It will aslo equalizate automaticlly every 28 days for calcium/ WET battery. Visual Solar Monitor: Equipped with Backlit LCD display and multiple LED indicators to monitor the real-time solar current and the battery voltage and to know the exact working condition of the solar panel and battery. As well as, the solar charger controller with auto memory function, automatically return to its last selected mode. 12V/24V Solar Controller: LNEX solar charger controller 12/24 Volt can Automatically detect 12V or 24V DC system voltages and it works on multiple batteries including LifePo4,LCO,GEL,AGM,Lead-Acid and Calcium,EFB batteries,Great for deep cycle, starter, marine, car, RV,powersport and more. Multi-Protection to Ensure Safety:Built in Multi charging protections against reverse polarity, short circuit, over temperature,over voltage, morever with the regulator to prevent your battery from being overcharged.Protects your battery from discharge at night. Under low light or no light conditions the solar panel voltage could be less than the battery voltage.it contains a special circuit which prevents current flowing back from the battery and into the solar panel. ?Advanced MCU control pulse width modulated (PWM) technology, high efficiency. ?Target for LiFePO4, LCO, Gel, AGM, Conventional lead-acid (WET) and Calcium, Crystal Batteries. ?Built in regulator to prevent your battery from being overcharged. Overcharging occurs when the charge voltage is unregulated. This can result in premature battery failure. ?Come with regulator to prevent your battery from being under charged, in the solar energy field, battery undercharge always occurs, especially on some Conventional lead ?acid or Calcium batteries; The unit provides an automatic Equalization feature for deeply drained Conventional lead acid battery or Calcium battery, as well as provides a cycling automatic Equalizing feature every 28 days. ?Can be connected to the battery permanently to keep the battery fully charged by using a process called ?floating?. This means the controller will stop charging when the battery is full and will automatically start charging the battery as required. This process will also reduce water loss and help prevent the battery from ?drying out?. ?Protects your battery from discharge at night. Under low light or no light conditions the solar panel voltage could be less than the battery voltage. The unit contains a special circuit which prevents current flowing back from the battery and into the solar panel. ?Colored LED?s to easily indicate the operational status and battery conditions. ?Digital LCD to directly display battery voltage, charging current, charging capacity (Amp hour), battery types and faulty codes. ?Provides external battery temperature sensor (Optional). ?Multi charging protections against reverse polarity, short circuit, over temperature, over voltage, etc. ?Surface Mount installation, do not directly mount to metal surface. 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. 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