Negative‑grounded MPPT solar regulator 20‑60A, auto 12‑48V, LCD & RS485 port, multi‑load modes, 300‑day data log for off‑grid RV solar projects.
Our M series MPPT solar charge controllers (M2420, M2430, M2440, M4860) adopt negative grounded design, supporting automatic voltage recognition from 12V to 48V with current options 20A/30A/40A/60A. Equipped with an intuitive LCD screen and RS485 communication port, it can record up to 300 days of operating data.
It is compatible with flooded, AGM, gel and lithium batteries, and offers multiple DC load control modes including light control and timer control. Built-in comprehensive multi-layer protection safeguards batteries against overcharge, over-discharge, short circuit and reverse connection. This reliable solar regulator is widely applied in off-grid solar systems, RVs, caravans and solar street light projects. We support OEM customization and provide one-year warranty.
product
1. Introduction
Our M series MPPT solar charge controllers (M2420, M2430, M2440, M4860) are negative-ground off-grid solar regulators with 20A/30A/40A/60A charging current. It automatically identifies 12V/24V/36V/48V battery systems, and the maximum PV input voltage reaches 100V. With high tracking efficiency up to 99.5%, it maximizes solar energy harvest for your battery bank.
Equipped with an LCD display and RS485 communication interface, it supports real-time data viewing and 300-day historical data storage. Compatible with flooded, AGM, gel and lithium batteries, it integrates comprehensive protection functions: overcharge, over-discharge, over-current, short circuit and reverse polarity protection. Natural air cooling design with aluminum heat sink ensures stable operation in harsh outdoor environments. Widely used for off-grid home solar, RV, caravan, solar street lights and remote power systems. We support OEM & ODM customization and offer 1-year warranty.
2. Key Features
✅ Advanced MPPT tracking technology, max efficiency 99.5% ✅ Auto 12V/24V/36V/48V battery voltage recognition ✅ Negative grounded design, PV max input 100V ✅ LCD screen with button operation, clear data display ✅ RS485 communication for remote monitoring ✅ 300 days running data record ✅ Multi-battery compatibility: Lead-acid & Lithium battery ✅ Full protections: Overcharge, over-discharge, short circuit, reverse connection ✅ Natural cooling with aluminum heat sink ✅ Wall-mounted installation, easy wiring ✅ CE certified, 1-year warranty, OEM available
3. Applications
- Off-grid residential solar power system
- RV, caravan, yacht mobile solar system
- Solar street lights, garden lighting
- Remote villages, mountain cabins, telecom base station backup power
We provide a one-stop service integrating mature solutions, production, delivery, and after-sales service.