Grid/Hybrid™ As a leader in off-grid energy systems designed around energy storage, OutBack Power is an innovator in Grid/Hybrid system technology, providing the best of both worlds: grid-tied system savings during normal or daylight operation, and off-grid independence during peak energy times or in the event of a power outage or an emergency.
OutBack products. Read all instructions and cautionary markings on the EnergyCell battery and on any accessories or additional equipment included in the installation. Failure to follow these instructions could result in severe shock or possible electrocution. Use extreme caution at all times to prevent accidents.
100% recyclable, and all are UL-recognized components. EnergyCell GH Front Terminal The EnergyCell GH (Grid/Hybrid) Series uses pure lead plates. It is intended to receive continuous float charging under normal conditions when utility power is present.
Installation and Operation EnergyCell RE The EnergyCell RE (Renewable Energy) Series uses pasted lead-calcium-tin plates. It is designed for regular discharge/charge cycles. The EnergyCell RE is available in both top-terminal and front-terminal designs. Intended for use in backup, off-grid, and renewable energy (RE) sites with OutBack inverters, charge controllers, ...
The EnergyCell GH has a longer shelf life than other VRLA batteries, including the EnergyCell RE. At room temperature (77°F or 25°C), the EnergyCell GH has a shelf life of 18 months before self-discharging to unacceptable levels. Figure 4 shows the rate of EnergyCell GH self-discharge at various temperatures.
This means that effectively the battery has more capacity under lighter loads. For example, if the EnergyCell 170RE is discharged at the 48-hour rate to a voltage of 1.75 volts per cell (a load expected to effectively drain 100% of its capacity in 48 hours), it will be measured to have 163.9 amp-hours.
Batteries are placed in series (negative to positive) for additive voltages. Batteries in series are known as a “string”. A string of two EnergyCell batteries has a nominal voltage of 24 Vdc and can be used for 24-volt loads. A string of four has a nominal voltage of 48 Vdc. Other voltages are possible. However, batteries in series do not have additive amp-hours.
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Series strings placed in parallel have the same nominal voltage as each string. They have the same amp-hour capacity of each string added together. Two parallel strings of two EnergyCell batteries in series have a nominal voltage of 24 Vdc, twice the nominal voltage. They also have double the amp-hour capacity of a single battery.
The decreased surface area can build up heat. Terminal Hardware EnergyCell batteries use one of two terminal types: A threaded stud which receives a nut, or a threaded hole which receives a bolt. The terminal type, hardware sizes, and torque requirements may be different between battery models.
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Installation and Operation To make the DC connections: If installing batteries in a rack or cabinet, always begin with the lowest shelf for stability. Place all batteries with terminals facing to the most accessible side of the rack. If terminal protectors are present, remove and save them.
2 hr 33 min Charging (EnergyCell GH) EnergyCell GH batteries are usually charged using a constant-voltage or float charger. OutBack inverter/chargers and charge controllers do not have this function as their default setting. They can be made to perform a constant float charge by skipping the absorption stage or setting the absorption voltage equal to the float voltage.
(2.27 volts per cell). Charging (EnergyCell RE) EnergyCell RE batteries are usually charged using a “three-stage” charging cycle: bulk stage, absorption stage, and float stage. Most OutBack chargers follow this algorithm. However, not all chargers are designed or programmed the same way.
The voltage requirements for float stage are much lower than for bulk and absorption. The voltages per model of EnergyCell RE are listed in Table 6 on page 19. The float stage should provide enough current to maintain the appropriate voltage. If batteries are in series, this number should be multiplied by the number of batteries in the string.
However, if cell damage has occurred, shorted cells may continue to generate heat and gas for some time. If an EnergyCell battery is not charged completely (or if the settings are too low), it will not reach 100% SoC. Its total capacity will not be available during the next discharge cycle. This capacity will become progressively less and less over subsequent cycles.
Troubleshooting and Maintenance Table 2 Troubleshooting Category Symptom Possible Cause Remedy Normal life cycle Replace battery bank when (or before) capacity drops to unacceptable levels. Reduced operating time Defective cells Test and replace battery as necessary. Excessively cold battery Carefully warm up the battery. Undersized cabling Increase cable ampacity to match loads.
Remove all battery connections, then allow the battery to rest in this state for 24 hours. Test the battery voltage, compensating for temperature. The EnergyCell RE battery should measure 12.84 Vdc. The EnergyCell GH battery should measure 12.95 Vdc. A battery below 12.6 Vdc has lost capacity and may need to be replaced.
(20.5 x 22.9 x (20.3 x 27.3 x (20.5 x 31.8 x (21.6 x 34.1 x 13.2 cm) 13.9 cm) 17.3 cm) 17.3 cm) 17.3 cm) Table 6 EnergyCell Charging Requirements at 77°F (25°C) 34RE 52RE 78RE 95RE 106RE 170RE 200RE 200GH 220GH...
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As described on page 8, the battery has less capacity under larger loads and more capacity under smaller loads. Table 7 shows EnergyCell capacity at a terminal of voltage 1.75 Vpc. Table 8 shows EnergyCell capacity at a terminal voltage of 1.85 Vpc.
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Masters of the Off-Grid.™ First Choice for the New Grid. Corporate Headquarters European Office 17825 – 59 Avenue N.E. Hansastrasse 8 Suite B D-91126 Arlington, WA 98223 USA Schwabach, Germany +1.360.435.6030 +49.9122.79889.0 900-0127-01-00 Rev C...
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