The two-volume EV technician's handbook — 66 chapters, 172 pages. Volume One builds the system understanding. Volume Two takes you to the bench with 150+ fault recipes, expected-value tables and waveform references.
Cell testing, matching, rebuilding, BMS relearn — all of it, at bench level.
Every one of these has a chapter written around it — not a definition, a procedure.
Range drops but the pack "reads fine" — voltage looks equal, so the weak cell keeps hiding. Vol 01 Ch. 9 · Vol 02 Ch. 17 — Capacity, internal resistance & cell matching
Vehicle refuses to close the contactors and the interlock loop has twelve places to break. Vol 02 Ch. 11 & 13 — HVIL tracing, contactors & pre-charge
Multiple unrelated errors appear at once — because the bus is the fault, not the modules. Vol 01 Ch. 16 · Vol 02 Ch. 7–9 — Bit timing, bus load, DBC & UDS
Hub motor jerks or refuses to spin, and phase–Hall combinations get swapped by trial and error. Vol 02 Ch. 26–28 — Back-EMF, Hall logic, hub motor repair
Charging stops midway and nobody can say whether it is the vehicle, the charger or the supply. Vol 01 Ch. 20 · Vol 02 Ch. 33 — Handshake decoding, Type-2, CCS2, GB/T
A repaired pack comes back, and there is no job card to prove what was measured before handover. Vol 02 Ch. 39–40 — Job card, SOP, pricing, warranty & liability
Most EV repair loss is not a technical loss. It is a diagnosis loss — a good component replaced because nobody measured, and a bad one shipped because nobody recorded. These two volumes exist to close that gap: a value to expect, a way to measure it, and a decision to take.
An EV is not a fuel system with a battery bolted on. Energy moves forward under drive and backward under regeneration, and every fault you will ever chase sits somewhere on this path.
Because the path is bidirectional, a "braking complaint" can be a battery complaint — Volume One teaches you to read it that way.
The habit that separates a technician from a parts-changer. You never jump from the complaint straight to a component — you narrow it, one verified step at a time.
Volume Two assumes Volume One and never repeats it — where a topic belongs to Volume One, Volume Two goes deeper instead of rewriting it. Together: 66 separate chapters.
Architecture, high-voltage safety, storage, BMS, drivetrain, networks, charging and thermal.
Where the multimeter stops — waveforms, protocols, pack rebuilding, board repair, workshop system.
Nothing hidden. Both volumes, section by section.
Most technicians read the chapters once and open the appendices every week.
Tables, system diagrams, measurement values and fault recipes — exactly as printed. Touch a page to pause.
EV service technicians, diagnostic engineers, battery technicians and workshop owners.
EV diagnosis mein sabse kaam ki cheez iska structured approach hai. Symptom se seedha component par jump karne ke bajay pehle system aur signal verify karna — ye practically bahut farak laata hai. Battery, BMS, motor aur charging samajhne ke saath fault diagnosis ka poora flow bhi clear ho jaata hai.
Advanced handbook ka CAN, UDS, oscilloscope aur measurement wala section mere kaam ke liye sabse zyada useful raha. Signal ko expected value ke against compare karke decision lena — isse troubleshooting kaafi systematic ho jaati hai. Complex electrical faults ke liye solid workshop reference hai.
Battery pack repair ke liye isme kaafi practical information mili. Cell capacity, internal resistance, cell matching, pack rebuilding aur BMS calibration — sab aapas mein jude hue hain. Fault recipes aur component test values ki wajah se book ko bench par quick reference ki tarah bhi use kar leta hoon.
Mere liye dono books ka combination sahi baithta hai — ek taraf EV architecture, high-voltage safety, charging aur basic diagnostics ka foundation, doosri taraf advanced repair aur workshop-level systems. Job card, SOP, tooling, documentation, pricing aur warranty wale topics workshop ke nazariye se kaafi kaam ke hain.
Experience hone ke baad bhi intermittent electrical faults aur communication problems mein measurement discipline hi sabse zaroori hai. Is handbook mein CAN, HVIL, insulation faults, contactors, pre-charge, motor testing aur controller repair kaafi gehrai se cover kiye hain. Iska "reading → limit → decision" wala approach mujhe khaas practical laga.
EV diagnosis mein sabse kaam ki cheez iska structured approach hai. Symptom se seedha component par jump karne ke bajay pehle system aur signal verify karna — ye practically bahut farak laata hai. Battery, BMS, motor aur charging samajhne ke saath fault diagnosis ka poora flow bhi clear ho jaata hai.
Advanced handbook ka CAN, UDS, oscilloscope aur measurement wala section mere kaam ke liye sabse zyada useful raha. Signal ko expected value ke against compare karke decision lena — isse troubleshooting kaafi systematic ho jaati hai. Complex electrical faults ke liye solid workshop reference hai.
Battery pack repair ke liye isme kaafi practical information mili. Cell capacity, internal resistance, cell matching, pack rebuilding aur BMS calibration — sab aapas mein jude hue hain. Fault recipes aur component test values ki wajah se book ko bench par quick reference ki tarah bhi use kar leta hoon.
Mere liye dono books ka combination sahi baithta hai — ek taraf EV architecture, high-voltage safety, charging aur basic diagnostics ka foundation, doosri taraf advanced repair aur workshop-level systems. Job card, SOP, tooling, documentation, pricing aur warranty wale topics workshop ke nazariye se kaafi kaam ke hain.
Experience hone ke baad bhi intermittent electrical faults aur communication problems mein measurement discipline hi sabse zaroori hai. Is handbook mein CAN, HVIL, insulation faults, contactors, pre-charge, motor testing aur controller repair kaafi gehrai se cover kiye hain. Iska "reading → limit → decision" wala approach mujhe khaas practical laga.
Written plainly, so the money goes to the right place.
Same content in both — 66 chapters across two volumes. The only question is whether you want it on the bench or on the phone.
Soft copy instantly, books delivered to your address.
English, written in workshop language — the terms are exactly the ones used on the floor: BMS, HVIL, pre-charge, DBC, back-EMF, SOC/SOH. Easy to follow even if English is not your first language.
All three — 2W, 3W and 4W. Volume Two has a dedicated chapter on smart-BMS and controller protocols used in Indian two- and three-wheelers, plus AIS-038 Rev.2, AIS-156, IS 17017 and AIS-138 in workshop language.
Volume One starts from EV vs ICE and builds up architecture, safety and systems, so yes. Volume Two assumes Volume One and moves to instrument-level work. Together they take you from ICE background to bench-level EV repair.
No. Where a topic belongs to Volume One, Volume Two goes deeper instead of repeating it — CAN becomes bit timing and DBC building, BMS becomes thresholds and relearn, the pack becomes teardown and rebuild. 66 separate chapters in total.
Yes. Order the hard copy and you get lifetime online access immediately — you don't wait for the books to arrive. No extra charge.
Use them to understand and compare. The printed values are typical reference ranges for teaching and cross-checking — they are not a substitute for the manufacturer's service data for the specific vehicle or pack in front of you. Where the book and an OEM document differ, the OEM document wins.