Ultra Power UP3500-28S 3500W 35A Intelligent Charger for 12-28S LiPo/LiHV RC Battery Packs

Overview

The Ultra Power UP3500-28S is an intelligent charger designed for high-cell-count RC battery packs. It supports 12–28S charging/discharging, offers up to 3500W max charging power, and provides real-time monitoring on a 2.4" HD color screen with one-key charging.

Key Features

• Dual-channel smart charger with one-touch (one-key) charging
• 2.4" HD color LCD display for real-time charging data (voltage, current, battery percentage, and progress)
• Worldwide AC input compatibility: AC 100–240V
• Ports and controls: AS150U battery port, balance socket, operation button, start/stop button, two-color indicator, cooling fan
• Battery support: LiPo / LiHV / Intelligent Battery
• Channel description:
  • Channel 1: compatible with batteries with balance ports and dedicated smart batteries matched to the charger
  • Channel 2: only applicable for dedicated smart batteries matched to the charger
• Supports LiPo/LiHV cell voltage settings: 4.20V / 4.25V / 4.30V / 4.35V / 4.40V / 4.45V / 4.50V (supports LiHV batteries up to 4.50V)
• Charging modes:
  • Balance Mode: automatically stops when charging is complete and helps keep cell voltages consistent
  • Storage (Maintenance) Mode: charges up to the storage target when below, or discharges and balances down when above
• Multiple protections: reverse polarity protection, overheat protection, overvoltage protection, over-time protection

Specifications

For plug type selection (US/EU/UK/AU) or setup assistance, contact support@rcdrone.top or visit https://rcdrone.top/.

What's Included

• UP3500-28S Smart Charger ×1
• Balance Adapter Cable + Adapter Board ×1
• Power Cable ×1
• User Manual ×1

Applications

• Charging and storage maintenance for 12–28S LiPo/LiHV RC battery packs
• Use cases referenced: agricultural drones, surveying, aerial photography, and inspections

Details

High-power, high-cell-count charging with up to 3500W output and up to 35A adjustable current for 12–28S packs.

The 2.4" HD color display makes it easy to track voltage, current, battery percentage, and charge status at a glance.

Choose Balance Mode for consistent cell voltages, or Storage Mode to bring packs to a safer long-term storage level.

Built-in protection features help support safer charging during demanding daily use.

Compact bench-friendly footprint with clear specs for power, current steps, supported cell count, and discharge capability.

Everything needed to get started is included, including the balance adapter cable/board, power lead, and manual.