1. Introduction

The Weida gel battery uses the sealed geltechnology and is designed for high reliable, maintenance-free power forrenewable energy applications. Depending on the advantage gel technology,optimum grid and plate design, the WEIDA gel battery offers highest power andreliability for your equipments.

2. Features & Benefits

• Gelled     electrolyte By the high-tech gelled electrolyte, gel battery is completely     leakproof and spillproof for easy installation in virtually any position     even under water. It eliminates ultra deep discharge and acid     stratification damage.
• Critical     pressure control valve maintains critical internal pressure while safety     expelling excess gas generated during overcharging, for longer battery     life. 100% tested for highest performance.
• Brushed     plate lugs provide the benefits. Low-resistance straps with outstanding     lug-to-knit and eliminate dropped and loose plates that reduce performance     and shorten battery life.
• Heavy-duty     plates with high density and deep-cycle oxide active materials, advanced     grid alloy for deep cycle use, provide quick recharge ability and superior     deep-cycle and float performance in the most demanding applications.
• Be     good at recovery from deep discharge Gel battery has a tight structure and     relative supplies of gelled electrolyte, always has some ions left to     conduct charge current resulting in the excellent recovery from deep     discharge characteristics.
• Completely     maintenance-free use the "recombination" technique to replaces     the oxygen and hydrogen normally lost in a met cell. Particularly in deep     cycle applications (normally use the wet battery), and offer a really     maintenance free battery.
• Tank     formed plates offer optimum computerized formation, additional quality     control and improved voltage matching.
• Premium     glass mat separators reduce gassing and improve gel filling and electron     flowing, providing more power.
• Well     low temperature performance, even at very low temperature the gelled     electrolyte will not be frozen and provide a well performance. Gel battery     is well suited to low temperature applications.
• Superior     life. The WEIDA gel battery maintain a long cycle and float life, provide     a lowest cost per month or lowest cost per cycle

3. Applications

• Water     pumping
• Wind     generation
• Cathodic     protection
• Communications
• Solar     system
• Electric     powered vehicles
• Golf     cars
• Commercial     deep cycle applications
• Power     plant

4. Charging

While the Weida gel battery will accept acharge extremely well due to its low internal resistance.

For using the sealed design, over-chargingwill dry out the electrolyte by driving the oxygen and hydrogen out of thebattery through the safety valves. Capacity is reduced and life is shortened Ifa battery is continually under-charged,
a power robbing layer of sulfate will buildup on the plates. Batteryperformance is reduce, life is reduced.

So what is important for gel battery thatis: charge at least 2.30V/Cell but no more than 2.35V/Cell at
68 ^oF(20 ^oC). Constant current chargers should neverbe used on gel battery.

Constant charging voltage: Shown is theconstant charging voltage in relation to the ambient temperature. The bandwidthshows a tolerance of ±30mV/Cell. This constant voltage is suitable forcontinuing charging and cyclic operation. In a parallel standby mode it always keeps battery in a fully charged state; in a cyclic mode, it provide for arapidly recharging and highly cyclic performance.

5. Discharge & cycling ability

Battery discharge capacity and cycle lifeare depended on the depth of discharge (DOD), and the ambient temperature.

Weida gel battery is designed to the"acid limited." This means that the power in the acid is used beforethe power in the plates. This design prevents the plates from ultra-deepdischarges. Ultra-deep discharging is what causes life-shorting plates sheddingand accelerates positive grid corrosion which destroy a battery.

Capacity vs. operating temperatures: shown are the changes in capacity for a wider ambient temperature range, giving theavailable capacity, as a percentage of the rated capacity, at different ambienttemperatures, for 3 different load examples, with uninterrupted discharge tothe appropriate discharge cut-off voltage.

The values for the upper edge of thecurves were obtained from charging at an ambient temperature of +20℃ with a voltage limit to 2.30V/Cell. For the lower edge,charging was carried out at the specified ambient temperature. The curves showthe behavior of battery after a number of cycles.