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ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
Industrial Cord Reels and Tool Taps
Industrial Work Area Heaters
Machine Vision Lights
QC Series Industrial Portable Lighting - Quick Change Mount
Rig Lights
Stadium lights
String Lights and Temporary Light Stringers
Tank Cleaning Lights
Three Phase Motor Soft Starters
Vapor Proof LED Lights
Variable Frequency Drives (VFDs)
Vehicle Mounting Plates
Workboat Light Fixtures & Lighting Equipment
Yacht Engine Room Lights
Color Changing LED RGB Lighting
Explosion Proof Cord Reels
GOLIGHT Spotlights
Larson FUTURE - Lease Lighting
Remote Area Lighting and Scene Lights
Utility Bucket Mount, Receiver Hitch & Trailer Mount Lighting
Aevum Control Lighting and Equipment - IIoT
Butane and Solvent Extraction Room Lighting and Equipment
DC to DC Transformers and Power Supplies
Explosion Proof Fans & Blowers
Explosion Proof Paint Spray Booth Approved Lights
Explosion Proof String Lights
Explosion Proof Switchgear & Controls
Fleet Service Lights and Lighting Equipment
Industrial Equipment Trailers
Industrial Handlamps & Droplights
ISO 14644/FS-209E Clean Room Lighting
LED Blasting Lights
Night Time Fishing Lights
Portable AC Power Supply Units
Portable Power Distribution Panels
Power Distribution Panels with KVA Transformers
Self-Contained Lighting
Service Pit Lighting
Solar Generators & Solar Powered Lighting
Agricultural Farm Equipment Lighting & Beacons
Explosion Proof Cameras & Surveillance Systems
Explosion Proof Emergency Lights
Explosion Proof Heaters
Garage & Gas Station Canopy Lights
LED Grow Lights
LED Lights
NDT Ultraviolet Lights
Portable Hazardous Location Lighting
Radio Communication Towers and Equipment
Salt Water Processing Equipment
Shelter & Tent Lighting
Thermal Monitoring Cameras and Systems
48V LED Equipment Lights
ATEX Rated Explosion Proof Lights
Automotive Lighting
Class Rated Signals, Alarms, and Systems
Hazardous Location Area Lights and Portable Lighting
HID Equipment Lights
Hot Work Permit Lighting and Equipment
Hunting Lights
Industrial lasers
Industrial Transformers
Light Towers
Outdoor Lighting
Remote Security and Surveillance Systems
Temporary Construction Lights
Vehicle Mounted Spotlights
Equipment & Heavy Machinery LED Light Package Fitouts
Phase Converters - Single to Three Phase
Marine Shore Power Cords and Equipment
24 Volt Military Lights
Disaster Relief / First Responders / Search & Rescue Lighting
Plastic Handcuff Key
110/120 Volt Flood Lights
Post Mount Spotlights
Magnetic Work Lights
Crank-up Light Masts
Intrinsically Safe Lights
Military Flashlights
LED Waterproof Lanterns
Work Area Lights
12 Volt Flood Lights
Boat Spotlights
New Boat Lights
HID Boat Lights
Boat Dock Lights
Remote Control Lights
Control Lights
Tow Lights
Magnetic Control Lights
NEW Lights and New Products
Evaporative Coolers
Police Equipment
AC/DC Transformers
Power Supplies
Military Spotlights 24V
Infrared Filters, Covert Covers, and Blackout IR Lenses
Military Equipment
Ultralife Batteries
Remote Control Pan Tilt Base
Larson Electronics Spotlights
Larson Electronics Parts
Replacement Lamps
Cords - Brackets
Portable Wheeled Generators
Non-Hazardous Location Extension Cords / Plugs / Outlets
HID Work Lights
HID Dive Lights
HID Off Road Lights
Acro Lights HID Lights
Halogen Lights
Acro Light Flashlight
Xenon HID Flashlights
Powerlight Flashlight
HID Flashlights
Xenon Flashlights
LED Status Lights
Forklift Lights
Tractor Lights
HID Post Mount Lights
Roof Mount Lights
Post Mount Light parts
Flashlight Holder
Magnet Spotlight Base
Tripods-Magnetic Base
Recharging Spotlights
Fire Rescue Lights
LED Street Lights
Utility Lights
Hazard Lights
Strobe Lights - Battery Operated
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Strobe Light Bars
Headlights - Headlamps - Hard Hat Lights
Suction Mount Lights
Magnetic Spotlights
12/24 Volt Spotlights
Gifts For Men
New 12 / 24 Volt Lights
Explosion Proof Accessories and Replacement Parts
Explosion Proof Lighting
Explosion Proof Hand Lamps (Drop Lights)
Explosion Proof Lights - Stand/Dolly
Explosion Proof Tank Lights
Explosion Proof Phones and Intercoms
Explosion Proof Extension Cords
Black Friday & Cyber Monday Specials
Crane Lights
Explosion Proof Light Rentals
General Light Rentals
Light Tower and Light Plant Rentals
Power Distribution Rentals
Power Plant Lighting
Refinery lights
Environmental Services Lights
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Chemical Plant Lights
Food Grade Safe Lights
Film and Entertainment Lights
Handheld Meters and Devices
Waste Water Treatment Lights
Mining Lights
Ship Yard Lights
Work Site Lighting

02/15/17 Closer Look at the Capacity of SLA Batteries and Solar Energy Systems

Article - February 15, 2016 By

Solar Powered Generator - 18 Kilowatts Max Output - 120/240 Volts AC 3 Phase - 30' Trailer Config

A Closer Look at the Capacity of SLA Batteries and Solar Energy Systems

Sealed lead acid (SLA) batteries have a reputation for being durable when used to support portable electronic devices. They require minimal maintenance and offer leak-proof capabilities. But when used with solar energy systems, the units present issues that can hinder the potential and performance of the machines.

For example, general purpose SLA batteries should not be deep cycled, as continuously discharging below 50-70 percent of its rated capacity could damage the units. In application, this would mean that large solar energy systems that rely on SLAs would need a handful of batteries to avoid unnecessary strain. This is not sustainable for supporting remote operations because such components take up space and transporting a series of batteries is no easy task, especially to areas with damaged or unreliable infrastructure.

What does this mean for individuals who want to utilize off-grid solar PV systems? Keep reading to learn about how deep cycling affects general purpose SLA batteries and cutting-edge solutions some solar manufacturers are applying to remedy its limitations.

Pitfalls of SLA Batteries

Most general purpose SLA batteries in the market today offer roughly 200-300 cycles. In order to reach the higher end of this estimated range, you must carefully maintain the units. This includes adhering to best practices during usage, charging and storing. The first thing you should know is that almost all batteries self-discharge. For SLAs, the rate this occurs depends on several factors with focus on storage and operating temperatures. When exposed to temperatures above 80 degrees Fahrenheit, the cells discharge at a rate of around four percent every seven days. Under ideal conditions (65-70 degrees Fahrenheit), SLAs discharge at a rate of three percent per month (or between 36 to 40 percent per year). It is advisable to monitor such activities by checking on the unit every 12 weeks.

Fully discharging an SLA battery (or below the recommended threshold of 50 percent), will create problems inside the cell. When discharged deeply, the polarity of weak components inside the unit is affected, which contributes to permanent damage. Furthermore, low cell voltage may cause lead sulfate created at discharge to linger on the plates. As a result, the compound crystalizes and causes a loss in capacity. It is important to consider that constantly using a unit that is partially charged, as well as failing to store SLAs in a charged state may also cause unwanted formation of the compound. Lead sulfate build up is greatly minimized when equalizing charges are consistently performed every 10 discharge cycles or every four weeks.

Overcharging SLA Batteries

Overcharging SLAs can be just as damaging as draining them deeply. When this happens, the unit can swell in size due to heat, resulting in abnormal bloat. After completing a full charge, excessive current makes its way into the battery. This occurrence forces water to decompose in the electrolyte. As the unit increases in temperature, it will continue to bring in more current. Hence, to stop this vicious cycle, it is vital to remove the battery from the connected device and assess the damage. In addition to causing bloat, overcharging may promote corrosion on the plate of the unit.

For deep cycling requirements, it might be worth trying deep cycle SLA or gel SLA batteries. Both options perform better in demanding systems that often discharge deeply. Such units are designed to be discharged as much as 80 percent and typically have thicker plates. Although it is possible to discharge deep cycle batteries at 20 percent charge, it is still recommended to only discharge the units at 50 percent. This practice will help maintain the lifespan and performance of the battery. For solar PV systems, industrial deep cycle batteries (also known as “traction” batteries, commonly found in forklifts and golf carts) may also be used.

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