Friday, October 29, 2010

Batteries & Multiple Parallel Strings

A customer asked me about the number of parallel strings that can be used in a battery back up system, so I thought I would address this in today's blog.

Battery failures in a battery bank are rarely the fault of the batteries themselves. It usually has to do with how they are maintained, connected, and if they are sized correctly for your particular system. A good rule of thumb to follow is to keep the battery bank as simple as possible and limit to a single series of cells. Limit the number of strings of batteries to 3 or 4. The more strings you have, the harder it is to equalize the batteries.

When wiring batteries in series-parallel, you want to keep all the batteries at an equal state of charge. Batteries that receive less charge than others are more likely to fail prematurely taking years off your battery life. Any additional resistance added to a string can reduce the life of the entire string. So to minimize resistence keep the same wire size and wire lengths the same throughout the battery bank to help distribute current evenly throughout.

If battereis are not charged properly it will affect the life of the battery. If batteries are discharged too far, its harder to bring those batteries back up to full charge again due to build up of sulfation (crystals formed on battery plates during the discharge cycle of a battery). If the crystals are not broken down all the way during the re-charging cycles the crystals will eventually become sort of like cement, preventing the battery from charging to 100%, thus affecting the life of the battery.

Tuesday, October 26, 2010

Solar World's 25-year linear performance guarantee

Solar World Solar Modules have a 25-year linear performance guarantee.
This means that the actual power of a new module cannot deviate from the specified rated power by more than 3% during the first year; and afterward, the power will not decrease by more than 0.7% of the rated power per year. So at year 10, the capacity is gauaranteed to be at least 90% of the nameplate as opposed to the industry standard guarantee of 80%. Solar Sales Inc is committed to supplying quality solar energy components at an affordable price.

Monday, October 25, 2010

RE Dealer for Magnum Energy in Florida

Great News...Solar Sales Inc is now the only Renewable Energy Dealer/Distributor of Magnum Energy Inverter Chargers in the state of Florida!

Here is a little information about Magnum Energy...
Magnum Energy is a leading manufacturer of premium inverter/chargers for Mobile, RV, Marine, Off-grid and Solar applications. With over 150 years of combined inverter design and manufacturing experience, Magnum Energy has incorporated new design and manufacturing techniques to build some of the industry's most reliable and advanced inverter/chargers. State of the art battery charger design using power factor correction techniques, an innovative first in modified sine wave platforms. Magnum's unique die-cast aluminum base allows full ratings up to 45C for superior high temperature operation.

Power Factor Corrected (PFC)Charger: The PFC charger is built into all Magnum inverter/chargers. It uses less energy from a generator than a standard charger – using only 15 amps AC per 100 amps versus 23 amps used by standard chargers.

Made in the USA. All Magnum inverter products are manufactured in their facility in Everett, WA. Data sheets and User Manuals are on our website at If you would like a quote, please call or send us an email. Retail, Wholesale, & Export Inquires are always welcome! We carry all Magnum inverter products including export versions for Latin American and Caribbean markets.

Thursday, October 14, 2010

Solar Sales Inc new Blog

Solar Sales Inc has started a blog! As solar energy news and updates become available we will post it to the blog and on our facebook account. As we continue to grow we will post relevant technical and product information to help you in your decision to use the sun as your energy source. If you need help or would like to contact us we can be reached at and by phone at 305-891-8355. We appreciate your support!