AC/DC Lithium Battery Charger 35Amp

Description

REGO 12V 35A AC-DC Battery Charger (RACC35A1W) is designed to efficiently charge a wide range of 12V battery types using an intelligent four-stage charging algorithm. It delivers stable and reliable charging performance while helping to extend battery life. Built-in electronic protections safeguard the charging process against common electrical risks. When paired with the optional BT-2 Bluetooth module, users can monitor real-time operating status, review charging data, and adjust charging parameters remotely via the Renogy App.

The RENOGY REGO 12V 35A AC-DC Battery Charger supports a wide range of 12V battery types and features an intelligent four-stage charging curve to ensure efficient and reliable charging performance. It includes comprehensive safety protections such as over-voltage, over-current, over-temperature, low-temperature, output short-circuit, and output reverse-connection protection to safeguard both the battery and charging system. The charger is compatible with lithium, gel, AGM (absorbed glass mat), sealed lead-acid deep cycle (SLD), flooded (FLD), and user-defined batteries, offering excellent flexibility for various applications. Equipped with intuitive LED indicators, it provides clear visual feedback on charging stage, battery status, and fault conditions. When paired with the optional external BT-2 Bluetooth module, users can monitor real-time operating status, access detailed operational data, and remotely adjust charging parameters via the DC Home app.

Adaptive Four-Stage Charging
The RENOGY REGO 12V 35A AC-DC Battery Charger features an adaptive four-stage charging algorithm designed to provide rapid, efficient, and safe battery charging. The charging stages include Bulk Charge, Boost Charge, Float Charge, and Equalization, each optimized to enhance performance and extend battery lifespan.

Bulk Charge
During the high-current fast charging phase, if the battery voltage has not yet reached the preset threshold (either Equalization or Boost voltage), the charger operates in Bulk Charge mode. In this stage, the charger continuously delivers a constant maximum current to rapidly increase the battery voltage. Once the battery voltage reaches the preset level, the charger automatically transitions to the constant voltage stage.

Constant Voltage Charging (Boost or Equalization)
When the battery voltage reaches the preset value, the charger enters the constant voltage charging phase. During this stage, the charging current gradually decreases and high constant current charging is no longer applied. This phase includes two possible states—Boost or Equalization—which operate independently and are not repeated within the same charging cycle.

Boost Charge
The Boost charging stage maintains the battery at a constant voltage for a default duration of two hours. Users can adjust both the Boost duration and voltage set point based on specific battery requirements, ensuring optimal charging performance and battery health.

Float Charge
After completing the constant voltage stage, the charger reduces the battery voltage to a Float charge level. Once the battery is fully charged, chemical reactions within the battery cease, and excess charging current would otherwise convert into heat or gas. The Float stage applies a lower voltage to maintain full battery capacity while offsetting self-discharge. If the connected load exceeds the charging current during this stage, the charger exits Float mode and re-enters Bulk Charge.

Equalization
Equalization charging is automatically performed once every 30 days. This controlled overcharging process benefits certain battery types by stirring the electrolyte, balancing battery cell voltages, and completing chemical reactions. During Equalization, the charger raises the battery voltage above the standard charging level, causing electrolyte gassing that helps restore battery performance and longevity.