44.4V E-Bike 50.4V 16A Battery Charger
16A into 44.4V (12S) packs at 50.4V (806.4W) on the YZ800 platform, with a CC/CV charging profile.
| Input Voltage | 100-240V AC |
|---|---|
| Output | 50.4V 16A |
Key specifications
Model / Battery Type
YZ800 series · 44.4V (12S) lithium-ion pack (44.4V nominal)
Output
50.4 V DC / 16 A (806.4 W) · CC/CV charging profile · Finish voltage: 50.3–50.5 V
Output Tolerance
Rated at 16 A (15.5 A min / 16.5 A max); Constant-current band holds 16 A from 36 V DC up to 49.2 V DC
Input
100–240 V AC, 50/60 Hz rated (47–63 Hz range), 10.0 A max via appliance inlet (detachable mains cord)
Efficiency & Power Factor
>88% efficiency · Active Power Factor Correction (PFC)
Display & Indicators
Case-mounted voltage display (shows real-time pack voltage during charge) · LED: Red = Charging, Green = Standby / Complete
Protections
OVP, OCP (17.5 A max, auto-recovery), SCP (below 0.1 $\Omega$, auto-recovery), OTP, overload, and automatic overcharge cut-off
Cooling & Enclosure
Built-in high-speed cooling fan · Fireproof ABS + PC housing · Class II double insulated · IP20 indoor rating
Dimensions & Weight
Approx. 230 × 135 × 70 mm · 1.8 kg
Environmental Range
Operating: -20 °C to +50 °C · Storage: -40 °C to +80 °C · 25–90% RH non-condensing · Altitude up to 2,000 m
Reliability & Safety
MTBF $\ge$50,000 h (MIL-HDBK-217F, 25 °C full load) · Leakage current $\le$0.25 mA at 220 V AC/50 Hz · 1,500 V AC dielectric strength
Certifications
CE (LVD + EMC), UKCA (LVD + EMC), RoHS 2.0
Commercial Terms
MOQ: 1 unit · Lead time: 10–15 working days · Warranty: 1 year
Customization & Build Options
Output Connectors: Anderson 50A / XT90 standard; options include 3-pin XLR, GX16, XT60, alligator clips, or custom configurations built to your drawings.
Pinout & Wiring: Customized to match your specific equipment pin assignments.
AC Input Plugs: US, EU, UK, or AU plugs available.
Branding & Packaging: Customized cables, labels, packaging, and user manuals.
##(FAQ) Compatibility & Battery Selection
1. What battery pack is this charger designed for?
This charger is engineered exclusively for 12S lithium-ion battery packs (44.4V nominal voltage) with a full-charge cutoff voltage of 50.4V.
2. Can I use this charger for a 13S (48V) or 10S (36V) pack?
No.
A 13S "48V" pack requires a 54.6V full-charge voltage.
A 10S "36V" pack requires a 42.0V full-charge voltage.
Using this 50.4V charger on the wrong pack size will cause severe undercharging or dangerous overcharging.
3. Can I use this charger on lead-acid batteries?
No. This unit utilizes a CC/CV lithium charging profile. Lead-acid batteries require a completely different charging algorithm and will be damaged.
Operation & Performance
4. How does the charging cycle work?
CC Mode (Constant Current): Delivers a steady 16A into the pack until the voltage reaches 50.4V.
CV Mode (Constant Voltage): Holds 50.4V constant while the current tapers down naturally.
Cutoff: Charging stops automatically when the pack is full, and the indicator turns green.
5. Is it safe to leave the battery connected overnight?
Yes. The unit features automatic overcharge cut-off protection, making it completely safe to leave connected overnight.
6. Why is the charger case warm during operation?
Under a heavy 16A continuous load, moderate warmth on the fireproof ABS+PC housing is completely normal. The internal high-speed fan and radiating fins actively pull heat away from the FR-4 circuit board and dissipate it through the shell.
Safety & Protections
7. What built-in safety mechanisms does the unit feature?
The charger includes six layers of protection:
OVP: Over-Voltage Protection
OCP: Over-Current Protection (17.5A max, auto-recovery)
SCP: Short-Circuit Protection (below 0.1 $\Omega$, auto-recovery)
OTP: Over-Temperature Protection
Overload Protection
Automatic Overcharge Cut-Off
Pre-Order Checklist
Before placing your order, please verify two crucial points:
Voltage Verification: Confirm your battery is strictly a 12S lithium-ion pack (50.4V full charge).
Current Handling: Due to the powerful 16A continuous output, verify that your battery's internal BMS, wiring, and charging socket (such as Anderson 50A or XT90) are rated to safely handle a continuous 16A load.
Related models
Other chargers built for the same battery system, from the same factory: