Inverex Power Wall INV-LV-IP21 5.1 (5.12 kWh LiFePO4)

The Inverex Power Wall INV-LV-IP21 5.1 is a 5.12 kWh (51.2V 100Ah) LiFePO4 wall-mount battery, the entry point of Inverex's current lithium line and the natural pairing for its Nitrox hybrid inverters. As of 2 August 2026 it costs Rs 277,500-285,000 — Rs 285,000 in stock at W11Stop, Rs 277,500 on pre-order at Alladin Store.

Specifications

All figures from the official Inverex INV-LV-IP21 datasheet unless noted.

Honest assessment

Pros. The published spec set is unusually complete for a Pakistani-market battery — C-rates, throughput, DoD and certifications all printed, which makes the brand auditable in a way most local assemblers are not. The 1.2C discharge (120A, ~6.1 kW) means the pack itself will not be the bottleneck on a 6 kW hybrid. Both CAN2.0 and RS485 are onboard, parallel expansion runs to 32 units, and Inverex's 28-location service network is the deepest published in the country — relevant, because a battery claim means moving a 41 kg box.

Cons. It is the most expensive local-brand 5 kWh battery we priced on 2 August 2026 — Rs 82,500-90,000 above the Fronus equivalent, Rs 22,500-35,000 above Pylontech's Fidus and MaxPower's MP-5000. The warranted throughput of 16 MWh is well short of what the 6,000-cycle headline implies (about 27.6 MWh at 90% DoD): by our arithmetic the warranty covers roughly 3,470 full cycles, not 6,000. The cell OEM is not disclosed. And W11Stop's listing claims "built-in Wi-Fi" while the official datasheet says Bluetooth + app — believe the datasheet, and check at delivery if remote monitoring matters to you.

Who should buy. Nitrox owners who want single-vendor accountability and are paying for exactly that. Anyone on a third-party hybrid should price the open-protocol rivals first and pocket the difference.

Pakistan reality check

BMS pairing. The retail pitch — and the reason to pay the premium — is plug-in pairing with Inverex's Nitrox hybrids over CAN. What Inverex does not publish is a compatibility list for anyone else's inverter. Pakistan's most common lithium retrofit failure is precisely this handshake (our guide documents the error patterns); if you are pairing with a non-Inverex inverter, require the working protocol setting in writing on the quotation, or walk.

Heat discipline decides its lifespan. The ≥6,000-cycle rating is measured at 25°C; a Lahore or Karachi utility room is hotter than that from April to October. The datasheet tolerates 55°C but tolerance is not longevity — why cheap batteries die is mostly thermal and BMS abuse. Indoor wall, no direct sun, not above or beside the inverter, and the pack's 0-35°C storage band is the honest comfort zone.

IP21 is an indoor rating. This generation dropped the older IP65 outdoor tolerance. If the install plan says veranda or stair landing exposed to rain-splash, this is the wrong SKU.

Claim paperwork. The datasheet's warranty footnote defers to the "Inverex Warranty Letter" and prints a 16 MWh throughput figure a claims assessor can invoke. Keep the invoice, get the warranty letter at purchase, and register the install with an authorized dealer so the serial is traceable.

Price context vs rivals (August 2026)

Only Pylontech's imported UF5000 costs more. On Rs-per-warranted-kWh the Inverex works out to roughly Rs 17-18 per kWh of throughput — the honest metric to compare across brands, since headline cycle counts are unenforceable. Need more capacity in one box? See the INV-LV-IP21 11.8 — but read its throughput math first.