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AI Mode conversation: Please analise this Leaf-Spy battery report
You sent: 1 image and said: Please analise this Leaf-Spy battery report
Please analise this Leaf-Spy battery report
Based on the LeafSpy screenshot provided, here is an analysis of your Nissan Leaf's high-voltage battery health and condition.
Key Battery Metrics
- State of Health (SOH): 57.16%
- This indicates significant overall capacity degradation. Your maximum driving range will be roughly 57% of what the car could achieve when brand new.
- Ah Capacity (AHr): 45.43
- This matches the low SOH, tracking the remaining usable amp-hours of the pack.
- Hx Rating: 25.57%
- Hx measures the battery's internal resistance. A very low percentage like this means internal resistance has increased dramatically, which limits power delivery (acceleration performance) and causes the battery to heat up faster during rapid charging or heavy driving.
Cell Balance & Voltages
- Cell Delta: 9 mV
- The difference between the highest and lowest cell voltages is excellent at just 9 mV (under 20–30 mV is considered perfectly healthy).
- Cell Uniformity: The red bars are remarkably uniform in height, meaning the individual cells are degrading evenly together. There are no clear "weak" or dropped cells causing a premature drop in range.
- Shunts Active: 8421
- The blue lines indicate that the Battery Management System (BMS) is actively shunting (balancing) specific cells. This is normal behavior, especially around an 81.2% State of Charge (SOC).
Usage & History
- Odometer: 67,767 miles
- The degradation is quite high for this mileage, which is typical for older 24 kWh or 30 kWh Nissan Leafs (especially in warmer climates or if fast-charged frequently).
- Charging History: 675 Quick Charges (QCs) and 2,978 L1/L2 Charges
- The car has a relatively high ratio of DC fast charging (QCs) to slower Level 1/2 charging. Frequent fast charging accelerates heat buildup, which is a major driver of degradation in the Leaf's passively cooled battery pack.
Summary Verdict
Your battery pack is highly degraded but structurally stable. It behaves like a healthy battery with a very small fuel tank—it charges and discharges evenly without erratic cell drops, but your total driving range per charge will be quite limited.
To help put this into perspective, could you share what model year your Leaf is and what your typical daily driving distance looks like?
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You said: 2016 Model Type: ZAA-AZEO
AZEO-204910
FSOARD9ZE03DB—ABA
Motor: EM57
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The AZE0-204910 chassis number confirms this is an early Japanese-import 2016 Nissan Leaf equipped with the 30 kWh battery pack.
Knowing this specific model configuration provides critical context for your LeafSpy data:
The 30 kWh Battery Context
- Degradation Pattern: Early 30 kWh packs from 2016 are notorious for degrading significantly faster than the older 24 kWh packs. A New Zealand EV study noted that early 30 kWh packs dropped in health at nearly three times the rate of 24 kWh packs due to a highly sensitive battery chemistry.
- High Internal Resistance (Low Hx): Your Hx of 25.57% perfectly illustrates the signature flaw of this specific battery. The cells develop high internal resistance. This means that even though your cells are perfectly balanced at rest (9 mV delta), the voltage will wildly fluctuate under load.
- Real-World Impact: When accelerating hard or driving up hills, your state of charge (SOC) may suddenly plummet or force the car into "Turtle Mode" prematurely, only to bounce back once you stop.
Estimated Remaining Range
With a 57.16% SOH, you have roughly 17 kWh of usable capacity remaining out of the original 30 kWh.
- Urban/City driving: You can expect roughly 65–75 km (40–45 miles) of range per full charge.
- Highway/Winter driving: Range will likely drop closer to 45–55 km (28–34 miles) due to wind resistance and the low Hx rating causing thermal efficiency losses.
Warranty Status
Because the vehicle was manufactured in 2016, the original 8-year/100,000-mile Nissan factory battery capacity warranty expired in 2024. If this is a used import operating outside of its original market (such as an ex-Japan model in New Zealand, the UK, or Australia), factory warranty coverage does not apply.
Are you currently looking to buy this Leaf, or do you already own it and want to explore battery replacement or cell-swapping options?
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