We engineer longevity into small lithium packs — where active cooling isn't economical — through passive thermal design, cell-level degradation modelling, and warranty-grade certification. Not a BMS. The intelligence layer above it.
Longevity engineering for 2–3 wheeler, delivery, light-industrial & marine packs across India
A lithium cell rated for 2,000+ cycles routinely gives up at 800. Not because it was a bad cell — because it sat 9°C hotter than its neighbour, got charged cold, and ran until the weakest cell in the series string dragged the whole pack down. Most operators never find out which failure it was.
In 14 days we tell you exactly why a pack under-runs its rated life — with per-cell evidence: DCIR curves, thermal maps, a weakest-cell projection, and a prioritised longevity plan.
Book your pack auditWe tell you exactly why your pack is under-performing its rated life — with cell-level evidence — within 14 days, or the diagnostic audit is free.
Longevity isn't a component — it's a stack. Each layer is engineered to protect the cell, and every layer reports into the memory graph that learns from every pack in the field.
Voltage, current, power, heat and chemistry aren't separate dials — they're five views of one reaction. Switch the mode and watch the ions move. Every gain in speed is paid for somewhere else, usually in life. Managing that trade is the whole game.
Discharge · 1C — Li⁺ ions leave the graphite anode, drift across the electrolyte and lodge in the LFP cathode. Electrons take the external path and do the work. Voltage sags slightly under load.
The potential between electrodes. It sets how hard energy moves — and how close you sit to the limits that stress the cell.
The rate charge moves. More current means more power on tap — and more heat generated inside the cell.
Energy per second — the product of the two. It's why "fast" and "hot" are the same sentence.
Resistive heating climbs with the square of current. Every degree above the safe band roughly doubles the aging rate.
LFP trades energy density for a flat, stable, long-cycle reaction. Chemistry sets the ceiling; engineering decides how close you get.
Round-trip efficiency is energy out ÷ energy in. Heat and resistance are where it leaks — and where cost hides.
Same cells. Same route. Same 44°C summer. The only variable is what happens between the cell and the enclosure — and it decides whether you replace the pack at year three or certify it to year eight.
Chosen to the real duty cycle — C-rate, DOD, ambient — not to a datasheet.
Sensors at the cell interface. Capacity, DCIR and thermal map, per cell.
Passive thermal design keeps every cell within 3°C — no fan, no pump.
Temperature-gated charging and balancing tuned to the chemistry.
Accelerated cycling turns a claimed life into a certified one.
Repurpose, resell or recycle — decided by data, not by guesswork.
From a pack on the bench to a certified warranty. No black box — this is the exact protocol, the instruments, and the reason each step exists.
Every pack in the field feeds one continuous cycle — sense, ingest, model, decide, act, remember. Deterministic where safety demands it. Predictive where life is won. Nothing in it is a black box.
Clockwise · continuous · every pass sharpens the memory graph
Cell taps, spacer thermistors, BMS log ingest. Capacity + DCIR + thermal map, per cell.
SOH trajectory, weakest-cell prediction, thermal-stress attribution, plating-risk flags.
Passive thermal box, charge policy, balancing tune, OLED feedback design.
Accelerated cycle test, standards conformance, warranty model the OEM can underwrite.
Live SOH telemetry, predictive replacement, fleet benchmarking, claim automation.
Fleet of L5 cargo three-wheelers losing packs before month 18. Teardown blamed the cells. Thermal mapping found a 9°C gradient cooking the centre string during fast-charge in 44°C ambient.
An OEM advertised a life its supplier packs couldn't back. We ran accelerated cycling, isolated cold-charge lithium plating as the failure mode, redesigned the charge window, and certified a defensible warranty.
A health display surfacing SOH and charge-habit feedback shifted operators off deep-discharge and cold-charge routines. Behaviour change alone added years — no hardware swap required.
A buyer suspected packs weren't meeting advertised longevity. We built a per-cell evidence pack — capacity fade, DCIR divergence, thermal history — that quantified the shortfall in rupees.
Representative engagement profiles. Cell chemistries, ambient conditions, and duty cycles vary — outcomes are engineered to the specific pack, not promised in the abstract.
CellIQ turns everyday pack behaviour into decisions a business can defend and a customer can understand: why range dropped, when replacement is due, and what operating habit is costing life.
For quick-commerce and food-delivery fleets, CellIQ separates driver behaviour from pack design: high-current climbs, deep discharge, and fast-charge heat are traced to the exact cells carrying the stress.
At a swap depot, two packs can show the same voltage and very different health. CellIQ grades usable SOH, flags thermal abuse, and keeps weak packs from being handed to the next rider.
CellIQ converts cycle testing, thermal history, and weakest-cell forecasts into claim-rate projections, so sales can offer a strong warranty without forcing finance to bet on a datasheet.
A rider or equipment owner does not need a chemistry lesson. CellIQ can surface plain health signals: charge gently today, avoid deep discharge, or schedule service before the pack strands them.
Cold-charge lithium plating is invisible until capacity is gone. CellIQ identifies risky charge windows, locks out unsafe profiles, and gives service teams the evidence behind the rule.
For financing, leasing, and second-life buyers, CellIQ creates a pack memory: how it was used, how it aged, and whether it is fit for resale, repurpose, or retirement.
This is a directional self-assessment — a real audit puts instruments on the pack. It's a fast way to see where the risk concentrates.
| Dimension | CellIQ™ | Cell / Pack Supplier | In-house team |
|---|---|---|---|
| What they optimise | Pack life over 8 years, per cell | Unit price at time of sale | Ship date & firmware stability |
| Thermal management | Passive design engineered to the duty cycle | Generic enclosure, no cell-level design | Off-the-shelf BMS thermal cutoffs |
| Degradation modelling | Per-cell SOH + weakest-cell prediction | Datasheet cycle numbers only | Pack-average SOC estimation |
| Failure analysis | Root-cause, rupee-quantified, evidence-backed | "Within spec" — dispute over | Limited teardown capability |
| Warranty backing | Certified & financially modelled | Marketing claim, thinly backed | Not their remit |
| Fleet memory | Every pack compounds into the model | None | Siloed logs, rarely analysed |
| Incentive alignment | Paid on longevity outcome | Paid to sell the next pack | Fixed cost, no life accountability |
We start with a diagnostic audit. If we can't show you — with cell-level evidence — why your pack is leaving life on the table within 14 days, the audit is free. No pitch deck, no obligation.
Give your team, fleet, and customers one defensible view of pack health: cell-level evidence, real duty cycles, predictive replacement, and a clear plan to extend useful life.
Complimentary diagnostic audit, delivered in 14 days: per-cell evidence, a weakest-cell projection, and a prioritised longevity plan with rupee-impact estimates.
A diagnostic audit delivered in 14 days — per-cell evidence and a prioritised longevity plan with rupee-impact estimates for every recoverable year. No obligation.
Book a pack auditKnowledge that measures the truth. Decision that turns truth into strategy. Execution that acts on it safely. See how measurement accuracy alone can recover up to a third of your usable capacity — interactively.
The cells are capable. The failure is engineered in — thermally, in the charge policy, in the one cell nobody's watching. All of it is measurable, modellable, and fixable. We'll show you exactly where in 14 days.