GYS GYSFLASH 3.48 PL Battery Charger User Manual

GYS GYSFLASH 3.48 PL 48 V battery charger user manual covering safety, lead-acid, LiFePO4 and lithium charging modes, specifications and troubleshooting.


GYS GYSFLASH 3.48 PL Battery Charger User Manual - cover page
Brand
GYS
Category
Battery Charger
Document type
User Manual
Language
Chinese
Pages
8
File format
PDF
File size
479 KB
Published
09 November, 2026
Updated
09 November, 2026
MD5 checksum
1074104A31C319BA256DA6DA1C4329DF

About this manual

The GYS GYSFLASH 3.48 PL is a 48 V battery charger intended for most lead-acid batteries (gel, AGM, liquid), LiFePO4 batteries and standard lithium batteries such as NMC, NCA, LCO and Li-Po. It charges 48 V packs with different series-cell configurations and adjusts its output voltage according to ambient air temperature.

The manual explains safety rules, connections, start-up, charging modes and the 7-step lead-acid and 8-step lithium charging curves. It also lists estimated charging times, protection functions, troubleshooting indications, warranty terms and technical specifications. This manual is written in Chinese.

What's inside

  • Safety rules
  • Basic description
  • Start-up
  • Charging modes
  • Charging curves
  • Estimated charging times
  • Protection
  • Troubleshooting
  • Warranty
  • Technical specifications

Specifications

Reference027893
Rated supply voltage220-240 VAC, 50/60 Hz
Rated power195 W
Rated output voltage48 V DC
Rated output current3 A
Rated battery capacity (Pb)6-60 Ah at 48 V
Rated battery capacity (Lithium)3-60 Ah at 48 V
Idle battery consumption< 0.5 mA
Ripple< 100 mV rms
Charging curveIUOU
Operating temperature-20°C to +40°C
Storage temperature-20°C to +80°C
Protection indexIP 65
Noise level< 50 dB
Weight1.1 kg
Dimensions (L x H x W)221 x 111 x 56.5 mm

Frequently asked questions

What batteries can the GYSFLASH 3.48 PL charge?

It can charge most lead-acid batteries (gel, AGM, liquid), LiFePO4 batteries and standard lithium batteries such as NMC, NCA, LCO and Li-Po.

How do I start a charge cycle?

Connect the charger to the battery, connect it to a 220-240 VAC 50-60 Hz single-phase supply, press the button for 3 seconds to unlock, select the mode, and charging starts automatically after about 5 seconds.

What is the rated output current?

The rated output current is 3 A.

What protections does the charger provide?

The manual states protection against short circuits and battery polarity reversal, plus a spark prevention system, double insulation and an internal temperature sensor.

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