35A 56.8V Charger for Lithium LiFePo4 16S Battery 2kW

35A 56.8V Intelligent Charger for 51.2V Batteries

Compatible With 16S LFP Lithium ESS Batteries

✅ 12-Month Warranty
✅ Recovers Batteries in Low SOC / Alarm State

Why You Need This Charger

If your system is showing a red Alarm LED or your inverter has shut down due to low battery voltage, this charger provides the power needed to safely bring your ESS battery back online. It’s ideal for winter months when solar generation dips, and regular use helps keep your batteries balanced and healthy.

This high-current model is especially useful for installers who need to bring new batteries up to 100% SOC before commissioning them into an existing system. It’s also popular with users charging from a generator, alternative grid supply, or van conversions with access to shore power.

Key Features

🔋 Optimised for 16S LFP batteries

Engineered specifically for 16-series LiFePO₄ battery packs, this charger delivers a controlled 56.8 V at up to 35 A, making it ideal for 51.2 V battery systems.

Unlike many off-the-shelf chargers that default to 58.4 V, this charger intentionally limits the voltage to 56.8 V. This lower, more conservative setpoint reduces the risk of individual cell overvoltage, helping to prevent BMS overvoltage alarms, unnecessary battery shutdowns, and long-term cell stress.

The result is a safer, more stable charge profile that prioritises battery longevity and system reliability—particularly important for recovery charging, maintenance charging, and winter operation where batteries may be at low state of charge.

🛡️ Built-In Protection System

Reverse polarity, short circuit, overvoltage, overcurrent, thermal, and low-voltage protection — keeping both your charger and battery safe.

⚡ Pre-Charge Recovery Mode

Safely wakes up deeply discharged batteries and reactivates the BMS.

🌡️ High Efficiency, Low Standby Draw

Up to 93% efficiency at 220V with minimal wasted power.

💧 IP67 Weatherproof Aluminium Housing

Dustproof, waterproof, and durable enough for workshop, garage, or van installations.

🤖 Smart Charging Logic

Constant Current (CC) → Constant Voltage (CV) → Automatic Cut-Off when full.

Technical Specifications

• Input Voltage: 90–264V AC (40–70Hz)
• Max Output Power: 2000W
• Output Voltage: 56.8V
• Output Current: 35A
• Protection Rating: IP67
• Operating Temperature: -40°C to +60°C
• Weight: 3.6kg
• Dimensions: 282x168x96mm
• Input Connector: IEC-C14 socket with supplied IEC-C13 to standard UK BS1363 Plug cable (1.5mm)
• Output Connector: M8 Ring Terminals

🔌 Generator Size Recommendation

Because the charger can draw up to ~2000 W at full output and generators don’t run perfectly at peak efficiency, you want headroom above that

✅ Minimum recommended generator size: 3 kW (3000 W)
✅ Better choice for reliability & extra capacity: 3.5 kW–4 kW

Intelligent Charging Stages

1. Pre-Charge Mode – Gently activates a deeply discharged battery (9.7A)
2. CC Stage – Charges at a steady 35A.
3. CV Stage – Holds voltage at 56.8V while current tapers down to 3.5A
4. Auto Cut-Off – Stops charging when full, protecting battery lifespan.

Safety & Reliability

✔ Overvoltage / Overcurrent Protection
✔ Short-Circuit & Reverse Polarity Protection
✔ Thermal Management – Reduces current at 80°C, shuts down at 90°C, restarts at 60°C
✔ Leakage & Insulation Protection
✔ Meets CE & LVD Electrical Safety Standards

What’s Included

📦 35A Intelligent Charger
📦 1.5m AC Power Cable
📦 DC Output Cable with M8 Ring Terminals
📦 User Manual

1-Year Warranty – Fast UK Dispatch – In Stock & Ready to Ship

Customer Use Cases:

Read about one of customer use cases here: