Your inverter backup system is only as good as the state of charge of your battery bank

Your inverter backup system is only as good as the state of charge of your battery bank

I installed just this morning an imported made in India 3.6kva 48vdc inverter for a client and realized that the charging current was just 11 amps as clearly stated on the inverter manual.

I have written severally about most of these inverters from China and India being manufactured using design assumptions that make sense in those countries but don't make sense in Nigeria.

Now, the typical battery capacity we use in Nigeria is a 12V 200Ah deep cycle battery.

How long will it take a 200Ah battery to fully charge from a discharged state using a battery charger that pushes out 11amps?

200/11 = 18 hrs

Now, who has 18hrs electricity out of 24hrs in a given day from PHCN to fully charge this battery and when will the inverter deliver power from this battery considering the reality on ground as per charging current and poor state of power supply?

Ever since I started building inverters locally sometime in 2004/2005 I have ensured that the charging algorithm delivers at least 20A when charging the battery or any battery bank for that matter.

Now, assume you need to double your backup time by doubling the number of batteries the issue becomes nearly hopeless because you may be requiring 36hrs to fully charge 2 nos 12V 200Ah deep cycle batteries that are connected in parallel since you will now have the same 12V system to contend with but a massive 400Ah!!

36hrs in a given 24hrs per day should be possible in the spiritual realm not in the field of engineering.

So, it is not really about how fine an inverter is or how marketers are able to convince you to part with your money. It is about getting an inverter backup system that is cost effective and saves you money in the long run.

Majority of the popular imported inverter brands out there are inverters the company executives have asked me to get into one form of collaboration or the other but I have always told them one thing based on the information clearly stated on their product catalogs - this your charging current will ultimately mess up an otherwise good inverter back up system because the battery bank may never receive full charge from the moment the system is set up even though the inverter section is always cool and ok.

Where do we go from here?

Repeating what I have written several articles on just to educate and enlighten potential inverter backup systems users in 2017 even though I wrote about these things as far back as over 7 years ago is worrisome?

If you know how many Nigerians that have been burnt trying to get and use inverter backup systems in their homes and offices you will cry.

Unfortunately for those with bad experiences they do not have a platform to tell their stories which are usually very different from the high expectations they had and unrealistic promises the service providers made to them before money changed hands.

Trust me when I tell you this - inverter backup systems work and they are almost always cost effective unless your power situation is really terrible and you want to power heavy loads like air conditioners, pressing irons and/or multiple refrigerators.

Share on



You may also like... Nigeria Biafra Civil War History 101 And some Igbo people are excited that Asari... South East and South West were not created... Justice for Sankara? Ex-president wanted over killing of... Stop poaching our achievements, fulfil your bogus promises... Women should not endure domestic abuses until they... Nigeria's President Buhari warned by first lady according... Does President Buhari really own a house in... Concerning Tinted Vehicle Glass – All You Need... Steady electricity for Nigerians in 6 months or...
Latest Articles Arsenal wins the FA Cup Final after crushing Chelsea Could there be more to the similarities between the Jewish and Igbo traditions? JAMB exams whether online or offline should not be a big deal!!! Shouldn't EFCC be dealing with this Capital Oil vs NNPC issue instead of DSS? There is no job out there that is worth the life of any man Shouldn't our military and paramilitary outfits boast of the best brains in Nigeria? May the Sultan and Emir not fail in their quest to help the Northern youths What's the big deal in the wife of a former president having money in her account? Men should learn how to cook and even make money from cooking sef Enough of this corruption excuse!


Popular Avoiding Domain Name Registration mistakes Steady electricity for Nigerians in 6 months or less Understanding Web Hosting Nigeria Online Scams: Where The EFCC Is Getting It Wrong Need to introduce the death penalty for corruption How EFCC can effectively tackle online scam (419) MTN 3G Internet service - Not yet uhuru Proposed energy tariff hike and privatization; the role energy efficiency can play Why it may take eternity for Nigeria to move forward How unique can a website be?





He that the gods want to destroy will be first made mad.



Build an electric transformer (DIY)




Articles Energy and Power (31)






Articles in pictures


| Advertise | Privacy Policy | Built with JBlog CMS | © 2017 Afam Nnaji - All rights reserved | Email | Powered by Just Web Services


| Advertise | Privacy Policy | Built with JBlog CMS | © 2017 Afam Nnaji - All rights reserved | Email | Powered by Just Web Services