Frequently Asked Questions
Can you compare your Graphene super capacitors to other popular methods of energy storage? What are the benefits?
Comparisson can be seen in this chart:
|Performance Comparison (100 Ah)|
|Metrics||AES Graphene Supercap||AES Lithium Ion||Lead Acid|
|Charge Time||< 55 min||~ 2.5 hrs.||6 – 8 hrs.|
|Charging Life Cycles||> 60,000||3,000 to 5,000||200 to 300|
|Energy Discharge||Surge 200% – 300%||Surge 150%||20%|
|Rated Capacity||105 A||100 A||5 x 20 A|
|Average Charging Amps||200 A||40 A||20 A|
|Charge Temperature||-40° to 140° F||-30° to 122° F||-4° to 122° F|
|Discharge Temperature||-40° to 140° F||-4° to 140° F||-4° to 122° F|
|Depth of Discharge||98%||80%||50%|
|Weight||98 lbs||95 lbs||295 lbs|
|Self Discharge||< 2% per Month||< 3% per Month||~ 4% per Week|
|Performance Fade||Minimal within operating range||Significant at higher end of operating range||Significant due to Sulphation|
Does the solution provide a High-Availability mechanism for critical mission applications? Meaning that there are two sets of batteries, one primary and one in stand-by status. When something goes wrong with the primary set, the stand-by should become the primary one automatically. Does the AES solution support something like this through the BMS module or any additional component?
Since we install the batteries in parallel, we can put them in (N+1) or (N+2) configurations where there are 1-2 extra batteries installed that can instantly provide redundancy if a battery or two goes down.
Can the BMS component generate alarms or SNMP-based events that can be sent to a Fault Management System? Something like environmental alarms.
Absolutely! Let us know what needs to be reported. Currently we can collect current, voltage and temperature at the pack and cell levels
How does the mobile app gain access to the battery set? Through a SIM and direct connection via the 3G/4G network or through an Ethernet port in the BMS system and via Internet connection?
We only require a wired internet connection. There are 3rd party wifi and cellular connection tools which we are happy to bundle with our storage solutions
Are there some screenshots of the Management System that we can provide to customers?
We can setup a separate demo of the security & monitoring toolset.
Does the management system support monitoring several battery sets deployed in cell sites spread across several locations? Can they be seen in a single pane of view?
All this is planned for the 2nd version which will be available towards the end of next year. We call it ‘Fleet Management’
What additional operations can be performed related to the solution management with the Management System?
Perhaps it is best to see a demo .. the client will basically be able to operate an entire mini-grid from the toolset.
What are the parallax limits for the batteries?
The BMS limits this to 15 batteries. The cabling used needs to be appropriately sized for the amp draw that the client plans to do. If additional capacity is required – we can construct additional battery banks.
What is the meaning of the projected calendar life?
This is a mathematical projection of the life of the battery doing 5 full charge-discharge cycles, daily.
What is the relationship between the kWh and voltage and amperage - 3.6KWh 48v 100A?
Our new generation battery (and also the old one) has a voltage range of 58.8V – 39.2V (Max charge to cut-off). At the rated 100A discharge current it stores 5.24 KWh of energy. (Based off latest supercap version)
How many amperes per hour does this battery deliver? (48V 5kw 200A variant)
The max continuous discharge for version 2.0 battery is 300A. The 5.24 KWh capacity means it will fully discharge in ~17 min at this rate. Similarly – at 100A discharge it should run for ~52 min
(48V 2.5kw 100A variant)
What is the Max Discharge Rate per Time Unit of the battery.
100A DC (2.5KWh)
What is the Max Continuous Discharge Rate.
100A DC (2.5KWh)
What is the Max Continuous Charge Rate.
100A DC (2.5KWh)
What is the DC Voltage Range for Charging the Battery?
48V DC – 58V DC
AES Storage Product Differentiators Chart: