It has been a busy Few weeks with Batteries. Not to mention the large 2200 lbs AGM absolute from GNB we installed recently.

Battery Testing
The operating Room back up systems. We required to discharge 4 batteries and stress
test to verify that the units will handle the load as designed.
We found that 1 was bad to start with and second was not able to handle the load past 30 min and 2 past properly.

These AGM Rocket batteries are 130 LBS at an  12 volt battery.
The customer requires a letter that the units passed a certain test standard basted
on the combination of load and discharge.
Inverter testing was performed on the charge rate on Bulk, Absorbsion and Float, Transfer switch, transfer modes,
Wire connections and corrosion areas.

Inverter Panel Layout
The inverter sub panel was inspected and all breakers tested and reset and all receptacles that are color coded
in the operating room reviewed to make sure they match.
One was found to have a red cover and was not a backup receptacle.
We have also been asked to quote on a Natural gas generator install
at this location as the 2 operating rooms and recovery room do require
more than the Emergency backup supply will carry.

New requirements are in place to have this process and review of capacity annually.
We have been asked to perform this every year going forward. Once we have this fully done and reviewed.

I inspected a solar installation and advised on all the non compliant installation items.
I also checked his batteries and he had 16 AGM 12 volt all into a 48 volt bank.
Turned out 15 terminal screws were loose. 5 batteries poor or discharged and 2 failed.

As a third spot today I had a large AGM 24 volt battery at a Goat farm.
He complained of the power failing and the voltage changing quickly up and down.
I load tested each cell to find one bad cell.
We have to locate one of these within days as I temporarily bypassed one cell and now only run on 11 cells.

This process if acceptable for a short charge cycle and a discharge before
charging again and not to overcharge the other remaining cells as there
is no place to put this once it charges each cell.

 This is a good part of our service work and our customers
are extremely pleased with this service and our competencies.

Regards

FEI
Group