Deep Sea Electronics DSE9255 MKII – 24V 5A Compact Battery Charger | DSE Battery Management Series
Engineering Background
Deep Sea Electronics (DSE) is a UK-based manufacturer with over 40 years of specialization in generator control and power management electronics. The DSE9255 MKII is engineered as a dedicated float/boost battery charger for standby power systems, designed to maintain battery health in genset, UPS, and critical infrastructure applications where reliable engine starting is non-negotiable.
Product Positioning
The DSE9255 MKII targets procurement engineers and system integrators who require a compact, DIN-rail or panel-mount charger with precise voltage regulation for 24V lead-acid and VRLA battery banks. It is the direct successor to the DSE9255, incorporating improved thermal management and tighter charge curve tolerances for extended battery service life in harsh industrial environments.
Complete Technical Specifications
- Part Number: DSE9255 MKII
- Manufacturer: Deep Sea Electronics (DSE), United Kingdom
- Output Voltage: 24 VDC (nominal)
- Output Current: 5 A (maximum continuous)
- Input Voltage: 90–264 VAC, 47–63 Hz (universal input)
- Charge Modes: Float / Boost (automatic switchover)
- Battery Compatibility: Lead-acid, VRLA/AGM, Gel
- Enclosure: Compact plastic housing, panel or DIN-rail mountable
- Operating Temperature: -20°C to +70°C
- Protection: Short-circuit, reverse polarity, over-temperature
- Indicators: LED status (Power, Charge, Fault)
- Dimensions: Compact form factor (refer to DSE datasheet for exact mm)
- Weight: Approx. 500 g
- Certifications: CE marked; compliant with EN 60335
- HS Code: 8504.40 (Static converters)
Proven Application Environments
- Diesel and gas generator sets (gensets) — standby battery maintenance
- Industrial UPS and critical power backup systems
- Marine and offshore auxiliary power panels
- Telecom base stations and remote monitoring equipment
- Fire suppression and emergency lighting control panels
- Oil & gas field instrumentation cabinets
Engineering Advantages
- Universal AC Input: 90–264 VAC range eliminates the need for external transformers across global grid voltages.
- Automatic Float/Boost Switching: Intelligent charge curve extends battery service life and reduces maintenance intervals.
- Compact Footprint: Designed for space-constrained control panels; minimal wiring complexity.
- Robust Protection Suite: Short-circuit and reverse-polarity protection safeguard both charger and battery bank.
- DSE Ecosystem Compatibility: Integrates seamlessly with DSE controller modules (DSE7xxx, DSE8xxx series) for unified genset management.
- MKII Improvements: Enhanced thermal dissipation and tighter charge regulation vs. original DSE9255.
System Architecture & Signal Flow
The DSE9255 MKII operates as a standalone trickle/float charger within a genset control architecture:
- AC Mains Input → Internal rectifier & PFC stage → Regulated DC output
- Charge State Detection: Monitors battery terminal voltage; automatically transitions from bulk/boost charge to float maintenance mode when battery reaches full charge threshold (~27.6 V for 24V systems).
- Fault Signaling: LED indicators provide local status; optional dry-contact fault output available for integration with DSE controller alarm inputs.
- Isolation: Galvanically isolated output for safe integration with grounded battery systems.
Sourcing & Quality Verification
- Origin: Manufactured by Deep Sea Electronics Ltd., Hungerford, United Kingdom.
- Authenticity: All units supplied by Konmask.com are sourced through verified distribution channels. Serial numbers traceable to DSE factory records upon request.
- Condition: New-in-box (NIB) unless explicitly stated as refurbished/surplus.
- Documentation: DSE9255 MKII datasheet and installation guide available upon order confirmation.
- Inspection: Pre-shipment functional verification available for bulk orders (>5 units).
Procurement Process
- Submit RFQ: Contact support@konmask.com with quantity, delivery timeline, and destination port.
- Quote & Lead Time: We respond within 1 business day with pricing, availability, and estimated lead time.
- Order Confirmation: Purchase order accepted via email or Shopify checkout.
- Export Documentation: Commercial invoice, packing list, and COO certificate provided for customs clearance.
- Shipping: DHL Express / FedEx International Priority standard; sea freight available for bulk orders.
Technical FAQ
Q: Is the DSE9255 MKII compatible with lithium (LiFePO4) batteries?
A: No. The DSE9255 MKII is designed for lead-acid, VRLA/AGM, and Gel chemistries only. Lithium battery charging requires a dedicated lithium-compatible charger with BMS communication.
Q: Can the DSE9255 MKII charge two 12V batteries in series?
A: Yes. Two 12V batteries wired in series form a 24V bank and are fully compatible with this charger.
Q: What is the difference between DSE9255 and DSE9255 MKII?
A: The MKII revision incorporates improved thermal management circuitry and tighter output voltage regulation. The MKII is the current production variant; the original DSE9255 is discontinued.
Q: Does Konmask.com provide a warranty?
A: Yes. All new units carry the manufacturer’s standard warranty (12 months). Konmask.com provides after-sales technical support for the warranty period.
Q: Can I request a sample unit before placing a bulk order?
A: Yes. Single-unit sample orders are accepted. Contact us for sample pricing and lead time.
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