1500W
Charging Power
40A Max.
Charging Current
2 Channels
Dual-Channel Charging
2S–8S
Battery Range
DRONE & FPV APPLICATIONS
Built for Professional Drone & FPV Battery Systems
Designed for battery-intensive drone and FPV operations where high charging power, broad battery compatibility and faster battery turnaround matter.
01
Agricultural Drones
High-power charging for compatible 6S battery systems used in smaller agricultural drone platforms.
02
Training Drones
Supports frequent battery rotation and faster turnaround between repeated training flights.
03
Industrial & Utility Drones
Suitable for compatible battery systems used in inspection, mapping, surveying and other professional drone operations.
04
Large FPV & Cinelifters
Built for high-capacity 6S, 7S and 8S battery systems used in large FPV and cinelifter platforms.
05
Long-Range & Professional FPV
High-power charging for demanding FPV applications using larger-capacity battery packs.
FULL 2S–8S BATTERY SUPPORT
Full 2S–8S Compatibility. High-Power Charging for 6S, 7S & 8S.
U3 Neo supports the complete 2S–8S battery range, while its 1500W power architecture is especially valuable for high-capacity 6S, 7S and 8S drone and FPV battery systems.
2S
→
3S
→
4S
→
5S
→
6S
→
7S
→
8S
6S
Mainstream Drone & FPV Battery Systems
Well suited to agricultural drones, training drones, industrial platforms and large FPV systems using compatible 6S batteries.
Up to 40A Single
20A × 2 Dual
7S
Dedicated 7S Battery Support
Native support for 7S battery systems, including 25.9V nominal 7S LiPo batteries used in professional drones, custom UAV platforms and large FPV applications.
Up to 40A Single
20A × 2 Dual
8S
High-Voltage Power for Large FPV & Drone Platforms
High-power charging for compatible 8S battery systems used in large FPV, cinelifters, professional drones and other demanding applications.
Up to 40A Single
20A × 2 Dual
High-current specifications shown for 6S, 7S and 8S applications are based on 220V AC input and compatible batteries capable of accepting the selected charging current.
HIGH-VOLTAGE POWER
Why 1500W Matters as Battery Voltage Rises
Higher battery voltage requires more wattage to maintain the same charging current. U3 Neo is engineered with enough output power to support high-current charging across demanding 6S, 7S and 8S applications.
SINGLE-CHANNEL EXAMPLE
8S × 4.5V/cell = 36V
36V × 40A = 1440W
With up to 1500W rated charging power on 220V AC input, the U3 Neo power architecture can support up to 40A single-channel charging even at the highest supported 8S charge-voltage setting.
DUAL-CHANNEL EXAMPLE
8S × 4.5V/cell = 36V
36V × 20A = 720W
During dual-channel charging on 220V AC input, up to 750W is available per channel—sufficient rated power to support up to 20A per channel across the supported 8S voltage range.
Examples above are based on 220V AC input and compatible batteries capable of accepting the selected charging current. On 110V AC input, maximum total charging power is approximately 750W.
CLEAR CONTROL & DISPLAY
Clear Setup. Real-Time Charging Visibility.
U3 Neo combines a color display with clear battery setup, real-time charging data and dual-channel monitoring, helping users configure compatible batteries and follow charging status at a glance.
01
Battery Setup & Cell Monitoring
Set battery parameters and monitor pack voltage, individual cell voltage and cell difference from the main interface.
02
Real-Time Charging Status
Follow charging progress, current, battery voltage, charged capacity, temperature and individual cell voltage during charging.
03
Dual-Channel Monitoring
View key charging information for both connected batteries from a single dual-channel status screen.
SMART CHARGING WORKFLOW
Automatic Charging with Saved Settings
LiPo is the default battery type on U3 Neo. After a compatible battery is connected, the charger begins a countdown using the current or previously saved charging settings. If no parameters are changed, charging starts automatically when the countdown finishes.
STEP 01
Connect the Battery
Connect a compatible battery and U3 Neo automatically starts the charging countdown using the current saved setup.
STEP 02
Automatic Start
If no settings are changed during the countdown, charging begins automatically when the countdown is complete.
STEP 03
Adjust When Needed
Battery type, charging current and other applicable parameters can be adjusted during the countdown. After making changes, press and hold the charging button to begin charging.
STEP 04
Settings Are Remembered
The updated charging settings are saved for the next session, so the same battery setup can use the remembered parameters without repeated configuration.
Always verify the battery type, cell count and charging parameters when connecting a new or different battery setup.
ENGINEERING ESSENTIALS
Power, Protection & Cooling
Essential power-management, protection and cooling functions are integrated into U3 Neo for professional charging applications.
Active PFC
Active power factor correction is built into the U3 Neo AC input architecture.
Charging Protection
Short-Circuit Protection
Over-Voltage Protection
Over-Current Protection
Over-Voltage Protection
Over-Current Protection
Active Air Cooling
Built-in fan cooling supports heat dissipation during high-power charging operation.
INTERFACES
Interfaces & Smart Battery Options
U3 Neo uses standard charging and balance connections, with an optional customized interface available for compatible BMS smart battery systems.
XT90
STANDARD
Main Charging Connector
Standard XT90 connectors are used for the main battery charging connection.
XT90I
CUSTOM OPTION
BMS Smart Battery Communication
XT90I can be customized in place of the standard XT90 connection for compatible smart batteries requiring communication with the battery BMS.
JST-XH
BALANCE CONNECTOR
Standard Balance Connection
Standard JST-XH balance connectors provide the balance connection for compatible 2S–8S battery packs.
TECHNICAL DATA
Specifications
CHARGING
Battery Cell Range
2S–8S
Battery Types
LiPo / LiHV / LiFe
Semi-Solid-State Batteries
Supported when the battery manufacturer’s specified per-cell charge voltage matches an available setting
Channels
2
Maximum Charging Power @ 220V AC
1500W
Maximum Charging Power @ 110V AC
Approx. 750W
Single-Channel Maximum Current
Up to 40A
Dual-Channel Maximum Current
Up to 20A × 2
Dual-Channel Power @ 220V AC
Up to 750W × 2
Selectable Per-Cell Charge Voltage
3.60 / 4.20 / 4.25 / 4.30 / 4.35 / 4.40 / 4.50V
AC POWER
AC Input
100–240V AC
Power Factor Correction
Active PFC
BATTERY MAINTENANCE
Storage Function
Yes — dedicated physical STORAGE button
Maintenance Discharge Power
Up to 30W
Storage Discharge Operation
Single channel only; both channels cannot discharge simultaneously
INTERFACES
Main Charging Connector
XT90
Smart Battery Communication
XT90I — Custom option for compatible BMS smart batteries
Balance Connector
JST-XH
ENGINEERING
Cooling
Active air cooling with one fan
Protection
Short-Circuit / Over-Voltage / Over-Current
USER INTERFACE
Display
Color display
Control
Scroll-wheel control with manual parameter selection
Charging Data Display
Battery Voltage / Charging Current / Charging Time / Progress / Charged Capacity
PHYSICAL
Dimensions
230 × 155 × 118 mm
Weight
2.06 kg
FREQUENTLY ASKED QUESTIONS
U3 Neo FAQ
Key answers about battery compatibility, charging power, high-current operation, charge-voltage settings and battery maintenance.
What battery cell counts does the U3 Neo support?
U3 Neo supports compatible 2S through 8S battery packs, including 2S, 3S, 4S, 5S, 6S, 7S and 8S configurations. It supports LiPo, LiHV and LiFe batteries.
Can the U3 Neo charge 7S batteries?
Yes. U3 Neo natively supports 7S battery systems as part of its full 2S–8S range, including 25.9V nominal 7S LiPo batteries used in professional drones, custom UAV platforms and large FPV applications.
Can the U3 Neo charge 8S batteries?
Yes. U3 Neo supports compatible 8S battery systems and is particularly well suited to high-capacity 8S batteries used in large FPV, cinelifters, professional drones and other high-voltage battery applications.
What is the maximum charging current of the U3 Neo?
When charging one compatible battery, U3 Neo can provide up to 40A. When both channels are used simultaneously, each channel can provide up to 20A. Full high-current capability depends on AC input power, battery voltage and the charging current accepted by the battery.
Can the U3 Neo charge two batteries at the same time?
Yes. U3 Neo is a dual-channel charger and can charge two compatible batteries simultaneously. On 220V AC input, dual-channel operation provides up to 20A and up to 750W per channel.
Does the U3 Neo provide 1500W charging power on 110V AC?
No. Maximum total charging power is up to 1500W on 220V AC input. On 110V AC input, maximum total charging power is approximately 750W.
Does the U3 Neo have a battery storage or maintenance function?
Yes. U3 Neo includes a dedicated physical STORAGE button for battery maintenance. The maintenance discharge function provides up to 30W discharge power and operates on one channel at a time. Both channels cannot perform storage discharge simultaneously.
What per-cell charge voltages does the U3 Neo support?
U3 Neo provides selectable per-cell charge-voltage settings of 3.60V, 4.20V, 4.25V, 4.30V, 4.35V, 4.40V and 4.50V. Always select the charge voltage specified by the battery manufacturer for the battery chemistry and charging requirements.
Can the U3 Neo charge semi-solid-state lithium batteries?
Yes, when the battery manufacturer’s specified full-charge voltage matches one of the U3 Neo’s supported per-cell voltage settings. Semi-solid-state lithium batteries can use different full-charge voltages, so the correct setting should always be selected according to the battery manufacturer’s specifications.
Can the U3 Neo communicate with BMS smart batteries?
The standard U3 Neo uses XT90 main charging connectors. For compatible smart batteries requiring BMS communication, XT90I connectors can be provided as a customized option.
Need Help Choosing the Right UAV Charger?
Share your battery cell count, capacity, required charging current,
number of batteries to be charged simultaneously, and communication
requirements. EV-PEAK can help you select the appropriate charging
solution for your UAV battery system.
For OEM and system-integration projects, custom communication
requirements, including RS485 integration, can also be discussed
with our team.
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