Alpha Technologies AlphaCell SMU - Manual (Page 8)

745-680-B9-001 8
1.0 Introduction
3.0 Specifi cations
2.0 Theory of Operation
Valve Regulated Lead Acid (VRLA) batteries make use of a process called recombination. By
reforming the water lost during electrolysis, recombination eliminates the need for regular battery
checks and for refi lling the battery water. The chemical reactions are as follows:
Pb + PbO
2
+ 2H
2
SO
4
2PbSO
4
+ 2H
2
O
2Pb + O
2
2PbO
PbO + H
2
SO
4
PbSO
4
+ H
2
O
Discharge
Charge
The AlphaCell SMU battery with sealed gas recombination technology is specifi cally designed
for telecommunication applications, and is available with capacities from 200Ah to 2,000Ah. The
AlphaCell SMU Series of batteries require less space than conventional VRLA batteries and are
structurally arranged to eliminate dislodging and slippage caused by vibrations over time.
Features and Benefi ts:
•
10+ year life
• Recombination effi ciency approaching 99.9%
• Low self discharge maximizes shelf life
• Strong, corrosion resistant grid design
• Modular unit structure allows for minimal footprint
• Unique, fl exible connectors that make for convenient installation and effi cient connections
• Shockproof external design
Fig. 3-1, Battery Construction
Terminal (+)
Safety Valve
Terminal (-)
Negative Strap
Positive Plate
Separator
Negative Plate
Container
Positive Strap
Cover