⚡ Live Battery Degradation Index
Updates every 2 s — shows how your current driving is affecting battery longevity
LIVE
Excellent — your driving style is preserving battery life
BDI Breakdown
High Current12
Accel Variance20
Regen Inefficiency15
Throttle Variability18
High Power Duration10
How BDI Affects Your Battery
Battery Stress (BSI)Instantaneous cell stress
18/100Thermal Risk (TRP)Runaway probability
8%Driving Thrash (DTI)Harshness of driving pattern
22/10018
Current BDI
0
Ticks
—
Last event
My Vehicle
Battery health report and personalised charging guidance for your 2021 Tesla Model Y.
TE
2021 Tesla Model Y
Long Range AWD · Pearl White
NMC Battery82 kWh nominalEV-8821
Battery State of Health
Excellent
Current SOH
93.2%
Excellent
Odometer
45,200 km
Total distance driven
Measured Capacity
76.4 kWh
of 82 kWh nominal
Est. Years to 80%
3.2 yrs
Projected useful life
Degradation Rate
4.17%/yr
Annual SOH loss rate
Data Points
14
Last: 08/04/2026
🤖
AI Prescriptive Insights
Personalised actions to extend battery life based on your charging history
Current trajectory
5.6 yrs
→
With prescriptions
7.3 yrs
Identified Risks
High DC fast charge usage (52%)high
Fix: Use AC Level 2 for regular charging. Reserve DC fast for travel only.
Frequent full 100% charges (31% of sessions)high
Fix: Set vehicle charge limit to 80% in app settings.
Charging Prescriptions
Reduce DC Fast Charging to ≤ 20% of sessionshigh
Each fast charge session increases cell stress by 3–5×. Reducing frequency extends usable battery life by up to 2.5 years.
Now: 52% of sessions use DC Fast / Supercharger
Target: Max 1 fast charge per week. Use AC Level 2 for regular charging.
+1.7 yr battery life · $500 in degradation costs per year
Set daily charge limit to 80%high
Charging to 100% regularly accelerates electrolyte oxidation in NMC chemistry. Limiting to 80% extends cycle life by up to 40%.
Now: 31% of sessions charged to 100%
Target: Daily limit: 80%. Charge to 100% only before long trips.
+0.8 yr battery life
A
Charging Grade
80/100 score
Daily target: 80%
Max charge: 80%
Sessions: 48
SOH History (18 months)
State of Health over time — 14 data points · live monitoring active
🔋
Battery Health Summary
- •Battery health is excellent. Continue normal charging habits.
- •NMC battery: daily charging to 80–90% extends long-term health. Reserve 100% for long trips.
Predictive Maintenance Schedule
AI-generated based on your battery state and degradation rate
SoonAug 2026
NMC Electrolyte Check
NMC chemistry is sensitive to high SOC storage and elevated temperature. Electrolyte condition degrades faster above 85% regular charge level.
$80–$140+18 mo life
Set charge limit to 80% for daily use. Only charge to 100% before long trips.
PlannedApr 2027
Battery Health Inspection
Scheduled health inspection based on current SOH of 93.2%. Inspection every year recommended.
$95–$160+4 mo life
Full diagnostic scan including BMS logs, capacity test, and cell impedance check.
PlannedOct 2026
BMS Software Update
Manufacturer BMS updates often improve cell balancing algorithms and charge curve accuracy, extending usable life.
Free+6 mo life
Check for OTA updates via vehicle manufacturer app. If unavailable, request update at next service.
Charging Behaviour Analysis
48 sessions analysed · last 48 recorded charges
Avg Start SOC
36.8%
Avg End SOC
85.4%
DC Fast Usage
52.1%
Overnight Chg
43.8%
Monthly Energy Charged
Nov 25
Dec 25
Jan 26
Feb 26
691.8
Mar 26
971.8
Apr 26
Recent Sessions
| Date | Start | End | Added | Charger | Location | Peak kW |
|---|---|---|---|---|---|---|
| 2026-04-27 | 24% | 99% | 53.44 kWh | AC Level 2 | home | 8 |
| 2026-04-26 | 21% | 79% | 42.59 kWh | Supercharger | public | 144.7 |
| 2026-04-25 | 26% | 69% | 29.85 kWh | Supercharger | home | 87.7 |
| 2026-04-24 | 39% | 100% | 43.11 kWh | Supercharger | home | 137.5 |
| 2026-04-23 | 29% | 54% | 17.34 kWh | AC Level 2 | work | 7.4 |
| 2026-04-22 | 46% | 100% | 39.26 kWh | AC Level 2 | work | 8.3 |
| 2026-04-21 | 34% | 55% | 15.36 kWh | Supercharger | public | 127.4 |
| 2026-04-20 | 35% | 100% | 47.14 kWh | Supercharger | home | 103.1 |
Charging Guidance — NMC Chemistry
⚡Daily Charging (NMC)
- ✓Set your charger limit to 80% for everyday driving — this significantly extends battery life.
- ✓Only charge to 100% when you need maximum range for a long trip.
- ✓Avoid letting the battery drop below 10% regularly — deep discharge accelerates degradation.
- ✓Charge at home overnight using Level 2 AC charging where possible — slow charging generates less heat.
- ✓Avoid DC fast charging for every session. Use it when convenience is critical, not as the default.
⚡Long-Term Storage (NMC)
- ✓Store at 50% SOC if leaving the vehicle unused for more than 2 weeks.
- ✓Avoid leaving at 100% charge for more than 24 hours — it stresses the cells.
- ✓Keep the vehicle plugged in if your charger supports scheduled charging, to allow thermal management.