Many legacy UPS systems used ELEX TOP 12V batteries. Their AGM design means zero hydrogen emission under normal use, making them safe for office and server room environments.
When the Elex Top launched, its main rivals included:
The Elex Top stood out for its compact modular design (Eurocard-style racks) and lower power consumption compared to many U.S. and Japanese designs of the era.
Put a 60-100W incandescent light bulb in series with the live AC line. When you power up, the bulb should flash briefly (charging capacitors) then go dim. If it stays bright, you have a short circuit. ericsson elex top
At its heart, the Elex Top used a metallic cross-point matrix of dry reed relays—tiny, hermetically sealed contacts actuated by an external magnetic coil. These offered:
| Model Variant | Voltage | Capacity (Ah) @ 20hr rate | Typical Dimensions (LxWxH) | Common Use Case | |---------------|---------|---------------------------|----------------------------|------------------| | ELEX TOP 12-18 | 12V | 18 Ah | 181 x 76 x 167 mm | Small UPS, DSLAM | | ELEX TOP 12-26 | 12V | 26 Ah | 165 x 125 x 175 mm | Micro BTS, routers | | ELEX TOP 12-65 | 12V | 65 Ah | 350 x 166 x 174 mm | Street cabinets | | ELEX TOP 12-100| 12V | 100 Ah | 330 x 173 x 216 mm | Main BTS backup | | ELEX TOP 2-200 | 2V | 200 Ah (per cell) | Custom rack mount | Central office power |
Note: Always verify specifications on the physical label of your Ericsson ELEX TOP unit, as private labeling for specific telecom contracts may vary. Many legacy UPS systems used ELEX TOP 12V batteries
Class D and Class AB amplifiers love stiff power. The instant transient response of the Elex Top (due to large output capacitors) provides dynamic headroom without voltage sag.
In the world of industrial electronics and high-end DIY projects, certain components achieve legendary status not because they are the newest, but because they are incredibly robust, reliable, and versatile. One such component is the Ericsson Elex Top.
For technicians, hardware hackers, and audio enthusiasts, the phrase "Ericsson Elex Top" conjures images of pristine DC power, silent operation, and bulletproof construction. While Ericsson is globally known for telecommunications infrastructure, their power division—operating under the brand name Ericsson Power Modules (now owned by Flex after the 2017 acquisition) —produced a line of AC/DC converters that remain highly sought after on the secondary market. The Elex Top stood out for its compact
This article dives deep into the architecture, specifications, applications, and modern-day relevance of the Ericsson Elex Top unit.
Unlike gel batteries, AGM batteries like the ELEX TOP can handle higher charge currents, recovering faster from a discharge event. They are also 100% spill-proof, allowing horizontal or vertical mounting.