LAST batteries employ antimony, high strength precision graduated triangulated grids designed to take advantage of precise modern casting techniques.
The grids provide superior active material interface and retention, while minimizing water loss and providing low impedance.

Positive Plate Support

Last batteries are the first flooded to employ performance internal buttresses to shoulder support the positive plates. The buttresses allow freely circulating additional electrolyte to contribute to call's capacity.

Negative Plates Support

The negative plates are bottom supported by perforated runners to allow the free natural stir and circulation of the electrolyte.

Separators

High quality micro-porous plastic separators are used between the plates. The separators are used between the plates. The separators permit optimum ion diffusion between the plates to assure low electricalresistance, while protecting against dendrites.The separators overlap the plates on all sides to protect against “mossing”induced virtual short circuits.

Posts

AllLAST cells have minimum of 2 take off posts on each pole to assure reliable connection and low impedance. The standard posts are round with brass inserts for insulated flexible cable connection. For high rate discharge applications, square posts with copper inserts optional. The square posts have 2 holes in the X-axis and 1 hole the Z-axis in order to enable “on line maintenance” and testing of each individual cell. All posts employ proven gas tight' leak-proof seal design.

Electrolyte

LAST batteries are rated for 1215 telecom optimized specific gravity electrolyte. 1220 and 1240 for higher performance' or 1210 for tropical sites electrolyte is optional. The cells are normally delivered filled and cycle chargers to assure 100% nominal at delivery.

Containers

The transparent SAN containers have a unique small footprint and allow for the integral support of the plates. The design affords optimum vertical convection cooling and electrolyte circulation.

Charging

Flooded batteries are inherently tolerant of high rate recharge as the electrolyte serves as an absolute heat sink to prevent thermal runway. This allows LAST to be recharged at high rates for rapid recharge. At the same time their assisted stir design assures affective recharge of shallow cycle at the nominal 2.20vpc float voltage.

Maintenance

LAST batteries provide cycling advantages of antinomy batteries, together with the low maintenance advantages of calcium batteries because of:

these features extend the topping off period to 12 months minimum at 25*C ambient temperature. LAST batteries are supplied with ceramic flame arrestors plugs as standard Hydrogen recombination vents are available as an option to extend the watering period to 3 to 5 years.

Racks

Single, double and triple tier or step racks, for normal, or seismic sits are available.