Batteries
Batteries
BrandInverex
Inverex 11.8kW IP21 Lithium Battery
₨ 600,000PKR · price may vary
BrandInverex- Model
- INVX-77
- Specifications
- 7
- Ingress ProtectionIP21
- Nominal voltage51.2V
- Battery ChemistryLithium Iron Phosphate (LiFePO4).
- Capacity230 Ah
- Cycle Life6000 cycles
- View all 7 specifications ↓
Overview
The Inverex INV-LV-P21-11.8 is a high-capacity lithium iron phosphate (LiFePO4) battery designed for indoor solar energy storage and heavy load management. It is part of the newer IP21-rated series from Inverex Pakistan.Features:Model Name: INV-LV-P21-11.8 (Power Wall).Nominal Energy
Specifications
| HARDWARE FEATURES | |
|---|---|
| Ingress Protection | IP21 |
| TECHNICAL SPECIFICATION | |
| Nominal voltage | 51.2V |
| General Specification | |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO4). |
| Capacity | 230 Ah |
| Cycle Life | 6000 cycles |
| Nominal Energy | 11.8 kWh |
| Operating Temperature | -20°C to 55°C. |
Reading the specifications
Inverex 11.8kW IP21 Lithium Battery is listed with 7 published specifications from Inverex, including ingress protection of IP21, nominal voltage of 51.2V, battery chemistry of Lithium Iron Phosphate (LiFePO4). and capacity of 230 Ah. Those figures are what decide whether this unit fits your system, so read them against the equipment it will connect to before comparing price.
For a battery, the figures that matter most are nominal capacity in ampere-hours (Ah) or kilowatt-hours (kWh), usable capacity after depth of discharge — LiFePO4 typically allows 80–100%, lead-acid closer to 50%, system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack and continuous charge and discharge current, which limits how much power you can draw from the pack. Storage is what turns a solar array from a daytime bill-reducer into a system that covers evening loads and rides through outages. It is normally the single most expensive component, so sizing it correctly matters more than with any other part.
Choosing a battery: the checks that matter
The checks below apply to any battery. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.
- Leave room to expand. Packs that parallel cleanly let you add capacity later; ones that do not force a full replacement.
- Compare usable kilowatt-hours, not nameplate capacity. A 100 Ah lead-acid battery at 12 V is nominally 1.2 kWh but only about 0.6 kWh is safely usable, while a 100 Ah LiFePO4 pack gives you roughly 1.0–1.2 kWh.
- Size from your evening consumption. Add up what actually runs after sunset for the hours you want covered, then divide by the usable capacity per unit — that number, not the array size, sets how many batteries you need.
- Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.
Common mistakes
- Installing lithium packs in an unventilated, hot enclosure. Sustained high temperature is the fastest way to lose cycle life.
- Ignoring the charge current limit and pairing a large array with a small bank, which trips protection and shortens life.
- Mixing old and new batteries, or different chemistries, in one bank. The weakest unit drags the whole bank down and can be damaged by the others.
Price and availability in Pakistan
Inverex 11.8kW IP21 Lithium Battery is listed at ₨ 600,000 (PKR) for Pakistan. Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.
SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in Pakistan: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports Inverex locally before ordering.
Inverex 11.8kW IP21 Lithium Battery — frequently asked questions
How much does Inverex 11.8kW IP21 Lithium Battery cost?
Inverex 11.8kW IP21 Lithium Battery is listed at ₨ 600,000 (PKR) for Pakistan. The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.
What are the specifications of Inverex 11.8kW IP21 Lithium Battery?
We hold 7 published specifications for this battery, including ingress protection IP21, nominal voltage 51.2V, battery chemistry Lithium Iron Phosphate (LiFePO4)., capacity 230 Ah and cycle life 6000 cycles. The full table is on this page, listed under model INVX-77.
Who makes Inverex 11.8kW IP21 Lithium Battery?
Inverex 11.8kW IP21 Lithium Battery is a Inverex product, listed under batteries with model reference INVX-77. The Inverex brand page lists the rest of its range so you can compare across the catalogue.
Is Inverex 11.8kW IP21 Lithium Battery right for my system?
That depends on what it has to connect to. For a battery, check cycle life at a stated depth of discharge, commonly 3,000–6,000 cycles for LiFePO4, round-trip efficiency, around 90–95% for lithium and 75–85% for lead-acid and communication protocol (CAN or RS485) for talking to the inverter against the rest of your equipment before price enters the decision. Compare usable kilowatt-hours, not nameplate capacity. A 100 Ah lead-acid battery at 12 V is nominally 1.2 kWh but only about 0.6 kWh is safely usable, while a 100 Ah LiFePO4 pack gives you roughly 1.0–1.2 kWh.
Where can I buy Inverex 11.8kW IP21 Lithium Battery in Pakistan?
SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer in Pakistan — buying in-channel is what keeps the manufacturer's warranty valid.
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