Connect multiple batteries in parallel with your power inverter, solar hybrid inverter or UPS to increase its backup. If you own a single battery inverter, you can connect more batteries in parallel as overall voltage of pack will remain the same while capacity multiplies. Make sure that your power inverter could afford charging several parallel connecting batteries at a time. If charger is slow, you should avoid connecting larger batteries. Check the inverter or UPS specifications to find out if charging current could be increased as that will help boost battery charging and shorten time to fully charge batteries.
As a reference, we have explained how to connect two, four, six, eight or ten lead acid (VRLA, AGM, Gel, flooded) or lithium batteries in parallel to power backup devices. You may connect any number of batteries in parallel keeping few things in mind which are discussed under “Detailed Discussion” heading below. Make sure to read it to get more information about parallel battery pack and safety information.
Two Batteries in Parallel with Power Inverter or UPS
2 Batteries Connected in Parallel with Power Inverter / UPS – Wiring Diagram
Four Batteries in Parallel with Power Inverter or UPS
4 Batteries Connected in Parallel with Power Inverter / UPS – Wiring Diagram
Six Batteries in Parallel with Power Inverter or UPS
6 Batteries Connected in Parallel with Power Inverter / UPS – Wiring Diagram
Eight Batteries in Parallel with Power Inverter or UPS
8 Batteries Connected in Parallel with Power Inverter / UPS – Wiring Diagram
Ten Batteries in Parallel with Power Inverter or UPS
10 Batteries Connected in Parallel with Power Inverter / UPS – Wiring Diagram
Important:
– While connecting batteries to your power inverter or UPS, please check its specifications to learn what kind of batteries it can accept. Do not mix different types of batteries in parallel pack.
– Every power inverter or UPS can charge certain capacity of batteries. Your inverter may start giving error if excessive capacity batteries are connected. Even several small batteries connected in parallel can result in excessive capacity and may cause problems.
– Never connect multiple batteries in series-parallel to inverter that could cause over voltage. For example, if your inverter accepts 12V battery, do not connect 24V battery pack to it.
– Avoid reversing battery polarity. That may damage inverter or UPS if it does not have reverse polarity protection. Also while connecting cables to batteries, make sure that short circuit does not happen. High capacity batteries can cause huge sparks and ignite fire. So be careful while wiring such batteries together.
Great David
I have 2 X 100Amh battery with my 2kva inverter and used it for a year,they really don’t get a lot of usage but i’m thinking of adding 2 more 100Amh batteries. Is it possible to do that?Please advice.
Rajvijay Singh
Sir I have two 500va Tubuler batterys,
Can I connect it with 1050va luminous ups??
Is it compitable with the UPS??
What shall I do??
Please advice..
Navaraj Mishra
Can you specify the arrangement of batteries as per the specification of the UPS for at least one hour backup for load around 20kw?
i have 30 KVA online UPS double conversion modular base design automatic bypass UPS with three phase input of 400 VAC.DC bus voltage of 204 VDC and charging current of 1-12 A settable.and 34 number of 12 V battery of 100 Ah rating where the battery are compact ,no maintenace type .
ups efficiency is 92% with power factor of 0.98
Nat
Sorry if this seems like a daft question. Once the batteries are all wired together in your favoured configuration, how do you you connect them to the inverter without getting sparks flying or a zap?
MH
I have a 1.5KVA inverter connected with TWO 100AH batteries. I need to replace the batteries now.
Can I go with just ONE 150AH battery?
Can I connect TWO 150AH batteries to my inverter?
Stuart
G’day. Thanks for your site. In your Eight Batteries in Parallel diagram… how would you connect the positive and negative cables coming from the solar charge controllers to the battery terminals. If we number the batteries in your diagram starting on the left, going from top to bottom as 1,2,3,4 then across to bottom battery on right as 5,6,7,8 from bottom to top? Thanks in advance
babalola odunayo
is it good to connect ten batter in series to 7.5kva inverter or in parallel
Talal A.
It depends on the battery voltage that inverter could accept. You may need to connect batteries in Series-Parallel to increase backup.
Kumod
I am using 100mah battery with 725 microtech invertor .may i add 150 mah exide battery .in this.
Talal A.
Yes. In parallel.
Lion
Hi I got a 40 watt solar panel and I was wondering can I connect to 12 volt battery to it if possible
John
The battery connections they show are wrong. You don’t connect both red and black connections going to the UPS or inverter at the same battery. You link all the batteries and then connect red on one battery and black on the opposite end of the battery bank.
Talal A.
Pole to Pole connection works fine as long as you use proper gauge cables that don’t cause voltage drop at the end of the line.
Jukebox
Can you go car battery t0 marine barrery to inverter. Then plug charger into ac plug on inverter then up to cat battery so as to being charging the car whille in use or just alternater on car charge it up