amperes electronics
Professional Public Address (PA) System Manufacturer
BC9740
24V DC Automatic Battery Charger
BC9740 is a 24V DC, 4A charger for SLA batteries up to 100Ah, with smart charging, built-in protection, and RS485 monitoring for extended battery life.
-
4A constant voltage charging with automatic current reduction
-
Built-in surge and short circuit protection
-
Thermal sensors with auto shutdown to prevent overheating
-
Reverse polarity protection to prevent battery damage
Introduction
BC9740 is a microprocessor-based 24V DC battery charger with a 4A capacity battery, designed for SLA batteries up to 100Ah. Engineered for efficiency, it features intelligent charge control, built-in reverse polarity protection and monitoring circuit to extend battery life.
With RS485 data output for remote monitoring and an LCD status display, it ensures easy operation and real-time status updates. Ideal for PA system backup power, the BC9740 offers compact design, efficient charging, and remote monitoring capabilities via PMX III software, making it a reliable choice for uninterrupted power solutions.
Packing information
Carton size: 555 (L) x 295 (W) x 95 (H) mm
Gross weight: 5.20 kg
Net weight: 4.40 kg
1 unit per carton
Introduction
BC9740 is a microprocessor-based 24V DC battery charger with a 4A capacity battery, designed for SLA batteries up to 100Ah. Engineered for efficiency, it features intelligent charge control, built-in reverse polarity protection and monitoring circuit to extend battery life.
With RS485 data output for remote monitoring and an LCD status display, it ensures easy operation and real-time status updates. Ideal for PA system backup power, the BC9740 offers compact design, efficient charging, and remote monitoring capabilities via PMX III software, making it a reliable choice for uninterrupted power solutions.
Packing information
Carton size: 555 (L) x 295 (W) x 95 (H) mm
Gross weight: 5.20 kg
Net weight: 4.40 kg
1 unit per carton
BC9740
Power Requirements
Operating voltage
220 - 240V AC
Charging voltage
27.8V DC max
Charging current
4A (nominal), 5A (maximum)
Idle power consumption
1.3W
Protections
25A PCB fuse, with low battery auto-disconnect, reverse polarity protection, system idle disconnection, and short circuit protection
Indicators
AC mains, short circuit, low battery
Displays
Charging current Charging voltage Battery voltage Output current Battery reverse polarity status
Communication
E/M backup amp rating
25A max (external contactor / relay recommended if required)
Terminals
Battery input, E/M load
Physical Specifications
Dimensions (W x H x D)
482 x 44 x 180 mm
Net weight
4.40 kg
Note: The specification parameters may be changed, added, or omitted without prior notice. Last updated on 24 Apr 2026.
4A constant voltage charging with automatic current reduction
Low battery disconnection alert to extend battery lifespan
RS485 port for remote monitoring via Amperes PMX III Software and Amperes iPX5500 Communication Box
Supports 24V battery banks with stable DC voltage charging
Built-in surge protection and output short circuit protection
Thermal sensors with automatic shutdown to prevent overheating
Reverse polarity protection to prevent battery damage
Registered association members of
International recognitions
© 1999 - 2026 Amperes Electronics Sdn Bhd. All Rights Reserved.
Payment
© 1999 - 2024 Amperes Electronics Sdn Bhd. All Rights Reserved.
PayPal payment is only applicable for payment from outside of Malaysia
Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Perindustrian Pusat Bandar Puchong,
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong
47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094
Amperes Electronics Sdn Bhd
SSM Registration No: 200001006420 (509025-X)
Your Trusted PA System Manufacturer since 1999
Sales Office (Malaysia)
70, Jalan Industri PBP 3,
Taman Industri Pusat Bandar Puchong
47100 Puchong, Selangor, Malaysia.
Tel: +603-5882 7757 / 7758
Production Factory (Malaysia)
2, Jalan Meranti Puchong D25@Meranti Puchong 47120 Puchong, Selangor, Malaysia
Export Sales Office (Singapore)
Amperes Asia Pte Ltd
(Co Reg: 201102253E)
1, North Bridge Road, #13-03, High Street Centre, Singapore 179094