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For Service/Customer Care 9311369797
Free Shipping on All Orders
Standard Delivery Within 5–7 Days
For Service/Customer Care 9311369797
The Rapid+ 3500/24V is a 3150VA / 2520W pure sine wave inverter for 3BHK and 4BHK homes and small offices. It runs on two 12V batteries in series and has a 24×7 MCB.
Original price was: ₹22,990.00.₹16,421.00Current price is: ₹16,421.00.
The Rapid+ 3500/24V is a 3150VA / 2520W pure sine wave inverter for 3BHK and 4BHK homes and small offices. It runs on two 12V batteries in series, and Invertek specifies it for a fridge, a 1-ton AC, computers and lighting together, with a 24x7 MCB and automatic bypass.
"3500" is the model number; the rating is 3150VA. For a heavier setup with a 1.5-tonne AC, the Rapid+ 4000/24V (3500VA) has more room. For ordinary loads without an AC, the Rapid+ 2500/24V (2250VA) is enough.
The 2,520 W figure is a resistive (bulb load) rating. Motors such as fridge compressors and pumps draw a short surge when they start, so count them a little heavier. Typical draws are below; check the label on your own appliances.
| Appliance | Typical running draw |
|---|---|
| Ceiling fan | 60–80 W (BLDC fan: 30–35 W) |
| LED bulb or tube | 9–20 W |
| 32 to 43 inch LED TV | 40–100 W |
| Desktop PC with monitor | 150–300 W |
| Double-door frost-free refrigerator | 150–300 W, plus a start-up surge |
| Top-load washing machine | 300–500 W |
| Water pump (0.5 HP) | 400–600 W, with a higher start-up surge |
| 1-ton inverter AC | 700–1,000 W once running, more at start-up |
A working example: a 1-ton inverter AC (900 W), a fridge (200 W), five fans (350 W), ten LED lights (100 W), a TV (100 W) and a router (10 W) come to roughly 1,660 W, about 66% of the 2,520 W rating. As a rule of thumb, keep the continuous load below about 2,020 W, which is 80% of the rating.
Heating appliances such as geysers, room heaters, induction cooktops and irons are within the rating on paper, but they empty a lead-acid battery bank in minutes. Leave them off during a power cut.
The Rapid+ 3500/24V is a 24V system, so it needs two 12V batteries connected in series. Tubular, TGEL, SMF, gel and LiFePO4 lithium all work. Connecting batteries in series raises the voltage, not the capacity: two 12V 200Ah batteries make a 24V 200Ah bank. The inverter is sold without batteries.
To estimate backup time, multiply battery volts by amp-hours, take about half of that as usable for a lead-acid battery, multiply by 0.85 for inverter losses, and divide by your load in watts. For two 12V 200Ah tubular batteries in series (4,800 Wh) that works out to about 1.2 hours at 1,660 W and about 2.3 hours at 900 W. A 25.6V 100Ah LiFePO4 battery (assuming 90% usable) gives about 1.2 hours at 1,660 W. These are calculations with an assumed 85% inverter efficiency, not lab measurements; heavy loads, battery age and temperature all shorten real backup.
| Model | Rated capacity | Battery voltage | Display | Suits |
|---|---|---|---|---|
| Rapid+ 3000/24V (2650VA) | 2650VA / 2120W | 24V | LCD | Clinic and office grade |
| Rapid+ 3500/24V (this model) | 3150VA / 2520W | 24V | LCD | 3BHK and 4BHK with a 1-ton AC |
| Rapid+ 4000/24V (3500VA) | 3500VA / 2800W | 24V | LCD | 4BHK or office with a 1.5-ton AC |
| Rapid+ 5000/48V (4750VA) | 4750VA / 3800W | 48V | LCD | Factory and office grade (48V) |
The inverter carries a 3-year (36-month) warranty. Register it on the warranty registration page after installation. Shipping is free on all orders, with standard delivery in 5–7 days. If you are unsure about sizing, call 9311369797 before you order. Invertek Energy makes its UPS range at its ISO 9001:2015 certified factory in New Delhi. Other capacities are listed in the full full Rapid+ range.
| Model Series | Rapid+ 3500/24V** |
|---|---|
| VA Rating | 3150VA/24V |
| Product Dimensions | 277x300x283 mm |
| Package Dimensions OD Size (mm) | 382x366x350 mm |
| Item Part Number | IE-SNW-INHUPS-3500-02A |
| Number of Items | 4 |
| Wattage | 2520W |
| Power Source | Inverter/ Home UPS |
| Frequencies | 50Hz |
| Manufacturer | Invertek Energy |
| Generic Name | Inverter/UPS |
| Included Components | 1 Inverter, Operating Manual, 1 Battery jointer, Silica gel |
| Item Weight | 20.57 kg |
| Package Weight | 22.5 kg |
| Country of Origin | India |
| HSN Code | 8504 |
Q: Is 3500 the VA rating of the Rapid+ 3500/24V?
No. 3500 is the model number. The Rapid+ 3500/24V is rated 3150VA / 2,520 W on a 24V battery system. When you compare it with other inverters, compare the VA, watt and battery voltage figures rather than the model number.
Q: What can the Rapid+ 3500/24V run?
It suits a 3BHK or 4BHK home, or a small office. For example, a 1-ton inverter AC (900 W), a fridge (200 W), five fans (350 W), ten LED lights (100 W), a TV (100 W) and a router (10 W) come to roughly 1,660 W, about 66% of the 2,520 W rating. Keep the continuous load under about 2,020 W.
Q: Can it run an air conditioner?
Invertek specifies the Rapid+ 3500/24V for a 1-ton AC alongside a fridge and other household loads. A 1-ton inverter AC draws roughly 700–1,000 W once running and more at start-up, so check its label. The example load of about 1,660 W is inside the 2,520 W rating, but an AC empties a battery bank fast, as the backup answer shows.
Q: How many batteries does the Rapid+ 3500/24V need?
Two 12V batteries connected in series to make a 24V bank. Tubular, TGEL, SMF, gel or LiFePO4 all work. Series connection doubles the voltage, not the capacity: two 12V 200Ah batteries give a 24V 200Ah bank. The inverter is sold without batteries.
Q: How long will the backup last?
Backup time is usable battery watt-hours divided by your load. With two 12V 200Ah tubular batteries in series, using about half of the battery capacity and assuming 85% inverter efficiency, expect about 1.2 hours at 1,660 W and about 2.3 hours at 900 W. Switching off unused loads extends this. These are estimates, not measured results.
Q: Can I use a lithium battery with the Rapid+ 3500/24V?
Yes. It is lithium compatible, so you can fit a 25.6V LiFePO4 pack (or two 12.8V batteries in series) now or swap one in later. At full load the inverter draws roughly 105 to 125 A from the battery, so choose a battery whose BMS is rated for at least that current.
Q: How is it different from the Rapid+ 3000/24V and Rapid+ 4000/24V?
The Rapid+ 3000/24V is rated 2650VA / 2,120 W on 24V. This model is 3150VA / 2,520 W on 24V. The Rapid+ 4000/24V is 3500VA / 2,800 W on 24V and suits a 4BHK home or a larger office.
Q: What happens if I overload the Rapid+ 3500/24V?
The 24x7 MCB trips when the load goes past the 2,520 W rating or the output is shorted. Switch off the heaviest appliances and switch the MCB back on; nothing needs replacing. Keep the continuous load under about 2,020 W to avoid nuisance trips.
Q: What warranty does it have?
3 years (36 months). Register the unit on the warranty registration page after installation. For service, call 9311369797.
Bought the Rapid+ 3500/24V for our home in Bhubaneswar because of daily 3-4 hour power cuts. It easily backs up AC in one room along with fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Installed it myself in about half an hour, quite easy. Overall really satisfied with the purchase, would recommend to anyone facing daily 3-4 hour power cuts. Customer support was helpful when I called with a query.
Bought the Rapid+ 3500/24V for our home in Lucknow because of unscheduled outages during monsoon. It easily backs up lights, fans and my son's online classes setup and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing unscheduled outages during monsoon. Haven't needed service yet but the warranty gives peace of mind.
Bought the Rapid+ 3500/24V for our home in Nagpur because of voltage fluctuations. It easily backs up computer, fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing voltage fluctuations. Support team responded quickly when I had a doubt about the battery.
Bought the Rapid+ 3500/24V for our home in Nagpur because of frequent power cuts. It easily backs up washing machine, fridge and fans and the sine wave output is very smooth, no humming sound from the fans or fridge. Installed it myself in about half an hour, quite easy. Overall really satisfied with the purchase, would recommend to anyone facing frequent power cuts. The dealer explained the warranty terms clearly at the time of purchase.
Bought the Rapid+ 3500/24V for our home in our locality in Ghaziabad because of unscheduled outages during monsoon. It easily backs up computer, fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing unscheduled outages during monsoon. Support team responded quickly when I had a doubt about the battery.
Get the latest updates on new products, offers, and power tips.
The Rapid+ 3500/24V is a 3150VA / 2520W pure sine wave inverter for 3BHK and 4BHK homes and small offices. It runs on two 12V batteries in series and has a 24×7 MCB.
Original price was: ₹22,990.00.₹16,421.00Current price is: ₹16,421.00.
The Rapid+ 3500/24V is a 3150VA / 2520W pure sine wave inverter for 3BHK and 4BHK homes and small offices. It runs on two 12V batteries in series, and Invertek specifies it for a fridge, a 1-ton AC, computers and lighting together, with a 24x7 MCB and automatic bypass.
"3500" is the model number; the rating is 3150VA. For a heavier setup with a 1.5-tonne AC, the Rapid+ 4000/24V (3500VA) has more room. For ordinary loads without an AC, the Rapid+ 2500/24V (2250VA) is enough.
The 2,520 W figure is a resistive (bulb load) rating. Motors such as fridge compressors and pumps draw a short surge when they start, so count them a little heavier. Typical draws are below; check the label on your own appliances.
| Appliance | Typical running draw |
|---|---|
| Ceiling fan | 60–80 W (BLDC fan: 30–35 W) |
| LED bulb or tube | 9–20 W |
| 32 to 43 inch LED TV | 40–100 W |
| Desktop PC with monitor | 150–300 W |
| Double-door frost-free refrigerator | 150–300 W, plus a start-up surge |
| Top-load washing machine | 300–500 W |
| Water pump (0.5 HP) | 400–600 W, with a higher start-up surge |
| 1-ton inverter AC | 700–1,000 W once running, more at start-up |
A working example: a 1-ton inverter AC (900 W), a fridge (200 W), five fans (350 W), ten LED lights (100 W), a TV (100 W) and a router (10 W) come to roughly 1,660 W, about 66% of the 2,520 W rating. As a rule of thumb, keep the continuous load below about 2,020 W, which is 80% of the rating.
Heating appliances such as geysers, room heaters, induction cooktops and irons are within the rating on paper, but they empty a lead-acid battery bank in minutes. Leave them off during a power cut.
The Rapid+ 3500/24V is a 24V system, so it needs two 12V batteries connected in series. Tubular, TGEL, SMF, gel and LiFePO4 lithium all work. Connecting batteries in series raises the voltage, not the capacity: two 12V 200Ah batteries make a 24V 200Ah bank. The inverter is sold without batteries.
To estimate backup time, multiply battery volts by amp-hours, take about half of that as usable for a lead-acid battery, multiply by 0.85 for inverter losses, and divide by your load in watts. For two 12V 200Ah tubular batteries in series (4,800 Wh) that works out to about 1.2 hours at 1,660 W and about 2.3 hours at 900 W. A 25.6V 100Ah LiFePO4 battery (assuming 90% usable) gives about 1.2 hours at 1,660 W. These are calculations with an assumed 85% inverter efficiency, not lab measurements; heavy loads, battery age and temperature all shorten real backup.
| Model | Rated capacity | Battery voltage | Display | Suits |
|---|---|---|---|---|
| Rapid+ 3000/24V (2650VA) | 2650VA / 2120W | 24V | LCD | Clinic and office grade |
| Rapid+ 3500/24V (this model) | 3150VA / 2520W | 24V | LCD | 3BHK and 4BHK with a 1-ton AC |
| Rapid+ 4000/24V (3500VA) | 3500VA / 2800W | 24V | LCD | 4BHK or office with a 1.5-ton AC |
| Rapid+ 5000/48V (4750VA) | 4750VA / 3800W | 48V | LCD | Factory and office grade (48V) |
The inverter carries a 3-year (36-month) warranty. Register it on the warranty registration page after installation. Shipping is free on all orders, with standard delivery in 5–7 days. If you are unsure about sizing, call 9311369797 before you order. Invertek Energy makes its UPS range at its ISO 9001:2015 certified factory in New Delhi. Other capacities are listed in the full full Rapid+ range.
| Model Series | Rapid+ 3500/24V** |
|---|---|
| VA Rating | 3150VA/24V |
| Product Dimensions | 277x300x283 mm |
| Package Dimensions OD Size (mm) | 382x366x350 mm |
| Item Part Number | IE-SNW-INHUPS-3500-02A |
| Number of Items | 4 |
| Wattage | 2520W |
| Power Source | Inverter/ Home UPS |
| Frequencies | 50Hz |
| Manufacturer | Invertek Energy |
| Generic Name | Inverter/UPS |
| Included Components | 1 Inverter, Operating Manual, 1 Battery jointer, Silica gel |
| Item Weight | 20.57 kg |
| Package Weight | 22.5 kg |
| Country of Origin | India |
| HSN Code | 8504 |
Q: Is 3500 the VA rating of the Rapid+ 3500/24V?
No. 3500 is the model number. The Rapid+ 3500/24V is rated 3150VA / 2,520 W on a 24V battery system. When you compare it with other inverters, compare the VA, watt and battery voltage figures rather than the model number.
Q: What can the Rapid+ 3500/24V run?
It suits a 3BHK or 4BHK home, or a small office. For example, a 1-ton inverter AC (900 W), a fridge (200 W), five fans (350 W), ten LED lights (100 W), a TV (100 W) and a router (10 W) come to roughly 1,660 W, about 66% of the 2,520 W rating. Keep the continuous load under about 2,020 W.
Q: Can it run an air conditioner?
Invertek specifies the Rapid+ 3500/24V for a 1-ton AC alongside a fridge and other household loads. A 1-ton inverter AC draws roughly 700–1,000 W once running and more at start-up, so check its label. The example load of about 1,660 W is inside the 2,520 W rating, but an AC empties a battery bank fast, as the backup answer shows.
Q: How many batteries does the Rapid+ 3500/24V need?
Two 12V batteries connected in series to make a 24V bank. Tubular, TGEL, SMF, gel or LiFePO4 all work. Series connection doubles the voltage, not the capacity: two 12V 200Ah batteries give a 24V 200Ah bank. The inverter is sold without batteries.
Q: How long will the backup last?
Backup time is usable battery watt-hours divided by your load. With two 12V 200Ah tubular batteries in series, using about half of the battery capacity and assuming 85% inverter efficiency, expect about 1.2 hours at 1,660 W and about 2.3 hours at 900 W. Switching off unused loads extends this. These are estimates, not measured results.
Q: Can I use a lithium battery with the Rapid+ 3500/24V?
Yes. It is lithium compatible, so you can fit a 25.6V LiFePO4 pack (or two 12.8V batteries in series) now or swap one in later. At full load the inverter draws roughly 105 to 125 A from the battery, so choose a battery whose BMS is rated for at least that current.
Q: How is it different from the Rapid+ 3000/24V and Rapid+ 4000/24V?
The Rapid+ 3000/24V is rated 2650VA / 2,120 W on 24V. This model is 3150VA / 2,520 W on 24V. The Rapid+ 4000/24V is 3500VA / 2,800 W on 24V and suits a 4BHK home or a larger office.
Q: What happens if I overload the Rapid+ 3500/24V?
The 24x7 MCB trips when the load goes past the 2,520 W rating or the output is shorted. Switch off the heaviest appliances and switch the MCB back on; nothing needs replacing. Keep the continuous load under about 2,020 W to avoid nuisance trips.
Q: What warranty does it have?
3 years (36 months). Register the unit on the warranty registration page after installation. For service, call 9311369797.
Bought the Rapid+ 3500/24V for our home in Bhubaneswar because of daily 3-4 hour power cuts. It easily backs up AC in one room along with fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Installed it myself in about half an hour, quite easy. Overall really satisfied with the purchase, would recommend to anyone facing daily 3-4 hour power cuts. Customer support was helpful when I called with a query.
Bought the Rapid+ 3500/24V for our home in Lucknow because of unscheduled outages during monsoon. It easily backs up lights, fans and my son's online classes setup and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing unscheduled outages during monsoon. Haven't needed service yet but the warranty gives peace of mind.
Bought the Rapid+ 3500/24V for our home in Nagpur because of voltage fluctuations. It easily backs up computer, fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing voltage fluctuations. Support team responded quickly when I had a doubt about the battery.
Bought the Rapid+ 3500/24V for our home in Nagpur because of frequent power cuts. It easily backs up washing machine, fridge and fans and the sine wave output is very smooth, no humming sound from the fans or fridge. Installed it myself in about half an hour, quite easy. Overall really satisfied with the purchase, would recommend to anyone facing frequent power cuts. The dealer explained the warranty terms clearly at the time of purchase.
Bought the Rapid+ 3500/24V for our home in our locality in Ghaziabad because of unscheduled outages during monsoon. It easily backs up computer, fans and lights and the sine wave output is very smooth, no humming sound from the fans or fridge. Setup was straightforward, no issues at all. Overall genuinely pleased with the purchase, would recommend to anyone facing unscheduled outages during monsoon. Support team responded quickly when I had a doubt about the battery.
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