Featured high-efficiency conversion units engineered for immediate deployment across Tanjung Perak Port facilities, Rungkut Industrial Estate (SIER), and East Java off-grid installations.
As the commercial capital of East Java and Indonesia’s second-largest metropolis, Surabaya serves as the strategic economic engine for eastern Indonesia. The city’s complex industrial footprint spans the massive shipping ecosystem of Tanjung Perak Port, the dense manufacturing corridors of Surabaya Industrial Estate Rungkut (SIER), and heavy industrial complexes across nearby Gresik and Sidoarjo.
Modern operations across these zones rely heavily on robust, uncompromised power conversion systems. High ambient tropical humidity (often exceeding 85% RH), corrosive coastal airborne salt, and grid line fluctuations on the PLN 220V/50Hz local distribution grid create an aggressive operational environment for power electronics.
PASS POWER (Suzhou Maili Electrical Appliance Co., Ltd.) supplies specialized DC-AC battery chargers, smart AC-to-DC switch-mode rectifiers, and high-frequency pure sine wave invertors designed specifically to withstand tropical climate stress while meeting strict operational safety standards.
Request Technical ConsultationUnderstanding the engineering principles behind reliable industrial DC-AC battery chargers, pure sine wave power inversion, and active battery protection.
Our smart chargers utilize a 3-Stage / 7-Stage dynamic charge curve (Bulk, Absorption, Float, Equalization). The algorithm prevents thermal runaway, neutralizes battery plate sulfation, and maximizes life cycle capacity for AGM, GEL, and LiFePO4 chemistry.
For combined AC inverter/charger units, delivering clean pure sine wave output with Total Harmonic Distortion (THD) < 3% is vital. This ensures uninterrupted operation of sensitive industrial PLCs, telecommunication relays, and marine nav-aids.
Equipped with short-circuit isolation, reverse polarity protection, over-temperature thermal cut-off, high/low voltage alarms, and soft-start technology to absorb heavy inductive motor startup surges.
Comprehensive overview of key power metrics engineered across our standard 12V, 24V, and 48V series supplied to East Java distributors.
| Model Range / Voltage Class | Rated Output Current | Input AC Range | Efficiency Peak | Compatible Battery Types | Core Certifications |
|---|---|---|---|---|---|
| 12V Intelligent Series | 10A / 30A / 50A / 80A | 110V / 220V AC ± 15% | > 88% | Lead-Acid, GEL, AGM, LiFePO4 | CE, RoHS, SGS, ISO9001 |
| 24V Industrial Series | 15A / 30A / 40A / 60A | 180V - 260V AC (50Hz) | > 91% | Industrial Lead-Acid, Lithium | CE, RoHS, IP30 Protection |
| 48V High-Capacity Series | 20A / 35A / 50A | 180V - 260V AC (50Hz) | > 93% | Telecom Lithium, Modular Stacks | CE, CB, SAA, ISO9001 |
| Hybrid Solar Charger Inverter | 5A - 20A / 3000W Inverter | 110V/220V AC Dual Range | > 94% | Solar GEL, Off-grid Lithium | CE, PASS POWER OEM Standard |
Customized power conversion solutions tailored to the operational demands of Surabaya's key economic sectors.
Tugboats, coastal cargo vessels, ferries crossing the Madura Strait, and harbor cranes require non-stop auxiliary DC power. PASS POWER smart chargers keep starter batteries and emergency navigation battery banks maintained at peak state-of-charge without overcharging under hot marine dock conditions.
Automated manufacturing lines, food processing facilities, and chemical processing plants in Surabaya Industrial Estate Rungkut (SIER) cannot afford micro-outages. Our AC-DC charging modules and inverter-charger units provide zero-latency transfer switch capability to safeguard automated assembly systems.
Remote islands off the East Java coast (Madura, Bawean, Kangean) depend on hybrid solar microgrids. Combining solar charge controllers with high-amp DC-AC battery chargers enables seamless diesel-generator integration with solar energy storage banks.
As Surabaya expands municipal and commercial electric vehicle adoption, high-output 12V 50A / 48V 50A chargers play an essential role in electric tugs, warehouse forklifts, golf carts, and commercial electric delivery vans.
Suzhou Maili Electrical Appliance Co., Ltd. is a specialized manufacturer and global exporter of high-performance power inverters, smart battery chargers, and industrial power supplies. Established in 2012, Maili is certified as a state-level high-tech enterprise operating from a modernized 2,770 square meter manufacturing facility with twin advanced automated assembly lines.
Our comprehensive quality control regime operates under ISO9001:2015 standards. Every product shipped to Surabaya and worldwide holds international certifications including CE, RoHS, IP30, and SGS verification.
We provide full-spectrum engineering customization to help Surabaya power equipment distributors, brand owners, and system integrators launch localized product lines.
Tailored DC output profiles (12V, 24V, 36V, 48V, 72V, 96V) and flexible AC input range adaptations.
Selectable output currents from 5A to 80A+ with step-less dial adjustment or digital touchscreen settings.
Integration of RS485, CANbus, Modbus, or Bluetooth telemetry for centralized industrial Monitoring.
Custom aluminum housing colors, laser-etched OEM logos, custom packaging, and custom user manuals.
Indonesian SNI / Schuko CEE 7/7 plugs, UK BS1363, or industrial hardwired terminal blocks.
Anderson connectors, heavy-duty battery clamps, M8 ring terminals, or waterproof aviation sockets.
Customized digital displays showing Real-time Voltage, Current, AH counter, Fault codes, and Battery SoC %.
Specialized tropical firmware profiles and upgraded heavy-duty cooling fan curve presets for tropical heat.
As energy storage systems become more compact and power-dense, PASS POWER is driving key technical innovations into our next-generation product roadmap:
Explore our complete range of certified intelligent chargers, portable automotive battery maintainers, and heavy-duty high-frequency power supplies serving Surabaya.
End-to-end customer care, technical troubleshooting, and warranty guarantees provided for Surabaya importers and project managers.
Sample charger units are readily available for regional testing, bench trials, and local market validation prior to bulk ordering.
Comprehensive factory warranty covering materials and workmanship across power inverters, chargers, and solar controllers.
24/7 dedicated engineering support covering spare parts replacement, repair guidance, and customized circuit protection.
Strict OEM processes based on ISO9001 and ISO14001 quality assurance system accumulated over 12+ years of manufacturing.
Hear from global B2B clients who rely on PASS POWER products for commercial and marine applications.
"I have bought 4 of these inverters and the build quality and performance is excellent. The build quality is very good. I had one issue where the mother board failed due to shipping damage. They sent me a replacement and allowed me to install it myself. Still working well after 5 years. Easy to talk to and supportive."
"I have purchased many times and am very satisfied with their product quality and after-sales service. The chargers work reliably under continuous heavy load conditions without thermal tripping."
Addressing technical, purchasing, and logistical inquiries for buyers and engineers in East Java.
A standalone DC charger converts grid AC power (e.g., 220V AC) into targeted DC voltage (e.g., 12V, 24V, 48V DC) to recharge battery banks. A combined AC Inverter with Battery Charger (often called an Inverter-Charger) performs bi-directional power management: it charges the battery bank when AC grid or generator power is available, and automatically inverts DC battery power back into 220V AC pure sine wave power during grid outages.
Our industrial chargers are engineered with heavy-duty aluminum heat sinks, smart temperature-controlled cooling fans, and conformal-coated internal circuit boards. This protective coating seals components against humid air and salt-mist corrosion prevalent around Tanjung Perak Port and coastal East Java zones, ensuring continuous 24/7 reliability.
Yes. PASS POWER 3-stage and dynamic multi-stage chargers feature selectable algorithm presets specifically calibrated for Lithium Iron Phosphate (LiFePO4), Sealed Lead-Acid (SLA), AGM, and GEL batteries to prevent over-voltage damage and balance cell voltage safely.
Standard OEM/ODM orders typical production lead time is 15–25 business days depending on volume and customization scope. Sea freight shipments are routed directly from Ningbo or Shanghai port straight to Tanjung Perak Port (Surabaya), while urgent sample orders ship via express air cargo.
Our facilities are certified under ISO9001:2015 quality management. Products carry international CE, RoHS, CB, and SAA certifications, complying with international electrical safety standard IEC 60335 and electromagnetic compatibility standards required by Indonesian customs regulators.
Partner directly with Suzhou Maili Electrical Appliance Co., Ltd. — A certified high-tech manufacturer with over 13 years of expertise in pure sine wave power inverters, smart battery chargers, and custom OEM energy systems.
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