The Optimus 3800+ with 3 x ILTT 18060 PRO pairs a 3.5 kVA pure sine wave inverter (36V system) with 3 x Inverlast ILTT 18060 PRO (150Ah tubular battery) as a ready-to-use home, shop and office power backup combo.

What to consider

This product combines an inverter with a matched battery for backup power. The practical decision is the relationship between expected load, runtime, battery technology, electrical system compatibility, warranty and the physical space available for installation.

Good to know (for buyers)

Inverter and battery(ies) are supplied together as a combo; battery warranty is a free-replacement period followed by a pro-rata period where listed.
Tubular battery — needs periodic distilled-water top-up; keep the battery upright and ventilated.
Prices are as listed on Luminous India; confirm current pricing and availability before you buy.

For retailers & quoting

Inverter and battery(ies) are supplied together as a combo; battery warranty is a free-replacement period followed by a pro-rata period where listed.
Tubular battery — needs periodic distilled-water top-up; keep the battery upright and ventilated.
Prices are as listed on Luminous India; confirm current pricing and availability before finalising a purchase or quote.
Confirm live stock, current pricing and exact SKU details before issuing a quote.

Inverter Model	Optimus 3800+
Inverter Technology	Pure Sine Wave
Inverter Capacity	3.5 kVA
System Voltage	36V
Digital Display	Yes
Inverter Warranty	36 months
Inverter Weight	31.5 kg
Inverter Dimensions	30 x 41.7 x 45.2 cm
Battery Model	Inverlast ILTT 18060 PRO
Battery Technology	Tubular Battery
Battery Capacity	150Ah
Battery Quantity	3
Batteries Supported By Inverter	3
Battery Warranty	60 months
Battery Weight Each Filled	54 kg (±5%)
Battery Dimensions	50.2 x 19.1 x 44 cm
Trolley Included	Not stated
Price Inr	₹70,496
Mrp Inr	₹90,790
Discount Percent	22%