Nexus Solar Energy offers LiFePO4 battery packs for solar storage and separate LTO products for selected applications. This guide explains the published series specifications, model selection, warranty conditions and available certification documents. Compare the exact battery model and written terms before ordering.
Published Series Claims and Model-Specific Warranty
| Series | Cycle Life | Warranty |
|---|---|---|
| Nexus Solar Energy ECO / ECO Plus | 3,000+ cycles | 5 years* |
| Nexus Solar Energy Premium | 4,500+ cycles | 5 years* |
| DEVSOL Premium | 6,500+ cycles | 15 years* |
Cycle life is measured under specified test conditions, including depth of discharge, charge/discharge rate, temperature and end-of-life capacity. A stated cycle count does not by itself guarantee the same number of calendar years in service. The figures above are published series claims; ask for the exact model’s test report and written warranty terms before comparing batteries. Warranty terms and conditions apply.
Battery Features to Verify for the Exact Model
LiFePO4 chemistry. The solar-storage models listed below use lithium iron phosphate (LiFePO4). LTO products are a separate chemistry. Confirm the permitted operating temperatures and installation conditions in the exact model datasheet.
Smart BMS with active cell balancing. Selected models advertise active balancing and temperature monitoring. Confirm the BMS model, communication compatibility, protection limits and balancing specification. Balancing alone does not establish a guaranteed cycle life or equal cell ageing.
Live cycle counting. Some display models provide a cycle counter. A cycle counter is not a measurement of remaining usable capacity; capacity and health assessment also depend on load testing, voltage, temperature and the model’s service procedure.
16-battery parallel expansion. Selected Smart BMS models list expansion up to sixteen compatible batteries. Confirm the exact model, matching voltage, firmware/communication, protection and installation requirements before combining batteries.
The Manufacturing Background
Nexus Solar Energy’s founder, Deepak Chaudhary, spent 17 years in battery manufacturing — beginning with battery plates and fabrication — before founding the company in 2019. In its April–May 2024 issue, EV Update Media featured him in its “In Conversation” section on exactly this subject: battery technology, BMS design, and the future of solar-driven storage in India.
Nexus Solar Energy is based in Bulandshahr, Uttar Pradesh. Ask for current model-wise manufacturing/assembly information and the service contact applicable to your location. The documents linked below do not establish that Nexus Solar Energy manufactures the electrochemical cells themselves.
Range at a Glance
12.8V, 25.6V and 51.2V models from 100Ah, in ECO, Premium and DEVSOL series — full specifications and MRP for every model are published openly on the lithium battery category page.
The 100Ah 12.8V lithium battery product page publishes a 6,500-cycle claim. Check the current product price, exact-model test conditions and written warranty before purchase.
Documents to check before choosing a battery
BIS licence renewal R-93022772 is available for review. This renewal document does not contain the exact battery-model annex or a cycle-life test report. Before purchase, request the nameplate model, applicable certification scope, written warranty and a test report stating depth of discharge, temperature, charge/discharge rate and end-of-life capacity. See Nexus Solar Energy company facts and certificate scope for the source documents.
Frequently Asked Questions
How should I compare lithium battery warranties?
Compare the exact model’s written warranty, exclusions, service process and capacity-retention terms. Nexus Solar Energy publishes a 15-year* warranty claim for the DEVSOL Premium series, subject to its terms. A 6,500-cycle rating alone does not establish 15 years of calendar life. Request the applicable warranty document and cycle-life test conditions before purchase.
Are Nexus Solar Energy lithium batteries made in India?
Nexus Solar Energy is based in Bulandshahr, Uttar Pradesh. Confirm the exact model’s country-of-origin and manufacturing/assembly information from its nameplate and documents. Battery-pack assembly and electrochemical cell manufacturing are separate processes.
Can I expand my battery bank later?
Selected models list up to 16 compatible batteries in parallel. Verify the exact model and installation requirements before expanding.
How do I check my battery’s health?
Check the available BMS/display readings and follow the exact model’s service procedure. A cycle counter alone does not measure remaining usable capacity.