Custom BMS firmware development
Bespoke BMS firmware for fleets / conversions.
At ev.care, custom bms firmware development is the advanced / r&d job we run when bespoke bms firmware for fleets / conversions. Bespoke BMS firmware for fleets / conversions. The workflow is the same one we use on our own R&D fleet: a stable bay, calibrated tools, and a printed record at the end so you can see exactly what changed. The job is backed by our standard 30-day functional warranty, and you'll leave with a written report and a clear next-step recommendation.
What's included
- Requirements scoping call
- Firmware draft with simulated cell pack
- Bench flash + validation
- In-vehicle commissioning
- Source code escrow option
- 30 days post-deployment support
Why this matters
Why this isn't an optional service: skipping it risks paying full pack-replacement price when a rebuild would have worked. A ₹49,999 workshop slot today is the cheapest insurance you can buy against that outcome.
How it works
- 1
Scoping call confirms feasibility, target spec, and warranty implications.
- 2
Vehicle is checked into the R&D bay and disassembly is documented.
- 3
Custom work is executed by an engineer + senior technician, never alone.
- 4
Bench validation is performed before reassembly.
- 5
Road validation + a written change log close the job out.
What we typically find
From hundreds of inspections — what makes the report.
- Wiring harness routing can be improved for cleaner thermals
- One or two cells holding back the pack's usable capacity
- Inverter parameters set conservatively from the factory
How to prepare
- Confirm the scoping call has happened and the quote is signed
- Drop the vehicle in the morning — most jobs are full-day
- Bring a list of all aftermarket modifications already done
- Carry the OEM key fob plus any spares
- Block out the day after for a buffer in case validation extends
Equipment we use
- Battery cycler with cell-level measurement
- Torque-controlled assembly tools rated for HV work
- Oscilloscope with current-clamp probes
Certifications
- ISO 9001 quality system
- IMI Level 4 EV technical
Transparent pricing breakdown
No hidden charges. This is exactly what makes up your bill.
Labour & technician time 72 hours | ₹27,499 |
Diagnostic & instrumentation | ₹15,000 |
Consumables & report | ₹7,500 |
| Total | ₹49,999 |
What customers say
“Did the scoping call first, gave me a clear quote, then delivered exactly that. Rare to find this kind of process.”
FAQs
How long?+
3-6 weeks depending on complexity.
Do I own the code?+
Yes — code escrow available on request.
Compatible BMS chipsets?+
Most major vendors (TI, ADI, NXP). Scoping call decides.
Who needs this
EV retrofit shops, fleet ops with non-OEM packs, R&D groups.
What's NOT included (honestly)
- BMS hardware
- Wiring harness
Related services
Ready to book custom bms firmware development?
Fixed price ₹49,999 — no surprises. Or describe a different problem and we'll match the right service.