SLA battery charger

Power Electronics / Power Management

30 September 2009 Power Electronics / Power Management

Silvertel’s Ag102 is a battery charger module for sealed lead acid (SLA) batteries. It is simple to use and requires only 2–3 additional components for operation.

In order to maximise battery lifetime, battery manufacturers recommend using multistage charging to reduce the stress on the battery while giving the shortest possible charge time. The recommended three-state charging process requires constant-current bulk charge, constant-voltage bulk charge and constant-voltage trickle charge to the battery, depending on the battery charge state. Additional difficulties arise when battery temperature is taken into account, as this alters the charging requirements of the battery.

In addition to providing the recommended three-state charging and temperature compensation outlined above, the Ag102 needs no extra supply rail to supply the battery charger, as it has a wide input range of 9–36 V. It uses an intermittent float charge to top up the battery, which prevents over-charging and saves energy. The unit has a high efficiency of 86%, and also monitors the battery condition and warns when the battery is below capacity.

Share this article:

Solving South African power problems with locally built intelligence
Editor's Choice Power Electronics / Power Management
Smart metering infrastructure in South Africa remains patchy. The rollout has been slow, coverage is inconsistent, and for the most part, granular per-unit measurement simply does not exist.

Read more...

Wide range power module
Power Electronics / Power Management
The latest DC-DC modules from Würth Elektronik are characterised by high resilience to voltage transients on the 24 V bus and an extremely wide input-voltage range from 3,5 V to 38 V.

Read more...

Selecting primary batteries for maximum service life
Uniross Batteries Power Electronics / Power Management
Primary batteries play an important role in IoT applications. Designed for longevity, they have a high-energy capacity and are often used in standalone applications where charging is impractical or impossible.

Read more...

4 kW e-mobility DC-DC converter
Brabek Power Electronics / Power Management
The RECOM RMOD4000 series of compact, plug-and-play DC-DC converters is a cost-effective solution to provide isolated 14 V, 28 V, or 56 V DC network rails from a high input voltage between 180 and 950 V DC.

Read more...

Aluminium case upgrade boosts performance
Vepac Electronics Power Electronics / Power Management
The SQBF Quarter Brick 300 W DC to DC Converter is now available in a newly upgraded metal case designed to deliver improved durability and superior electrical performance across demanding applications.

Read more...

Extending the range of power converters
RS South Africa Power Electronics / Power Management
Power Integrations recently announced a breakthrough in flyback topology extending the power range of flyback converters to 440 W - well beyond the limits that traditionally required more complex resonant and LLC topologies.

Read more...

Categories

Power Electronics / Power Management

SLA battery charger

Further reading:

Publications by Technews