Degradation, maintenance, and best practices according to the official manual.
BYD's Blade Battery is considered one of the safest batteries in the world for electric vehicles. Its revolutionary design combines safety, durability, and performance.
| Feature | LiFePO₄ (Blade) | NMC/NCA |
|---|---|---|
| Fire risk | Very low | Moderate-High |
| Thermal runaway temp | ~500°C | ~200°C |
| Life cycles | 3.000+ | 1.000-2.000 |
| Material cost | Lower (cobalt-free) | Higher |
Your Blade Battery LFP is officially guaranteed against excessive degradation. If its health (SOH) drops below 70%, BYD takes care of it.
LFP batteries tolerate 100% charges better than other technologies (NMC), but this doesn't mean you should keep it at maximum all the time.
Balanced recommendation: Charge to 100% approximately once a week to calibrate the BMS, but for daily use, charge to 70–80%. This helps maintain reading accuracy and take care of the battery long-term.
To improve accuracy of the displayed %, discharge below 10% and charge to 100% in one go. Recommended every 3 to 6 months.
If you're going to leave the car stationary for more than a week, leave it with a charge between 40% and 60%.
According to the official BYD manual, exposure to more than 55°C or less than -40°C for 24 hours may affect the warranty. The ideal operating temperature is between 10°C and 35°C. Above 45°C, degradation accelerates significantly.
If you reach 0%, recharge as soon as possible. LFP batteries are tolerant, but leaving them in deep discharge for days or weeks can cause cell imbalance and loss of capacity.
During very long stops (+3 months), perform a charge cycle at least once every 3 months. This allows the BMS to recalibrate the state of charge and balance the cells.
It's not bad to do it occasionally, and it's actually beneficial for system accuracy.
The Atto 3 BMS (Battery Management System) uses cell voltage to estimate the charge percentage. In LFP batteries, the voltage curve is very flat between 20% and 80%, which can cause 'drift' in readings. Upon reaching 100%, the system detects the maximum reference voltage and recalibrates its estimates.
However, this doesn't mean you should always charge to the maximum. Ideally, alternate: periodic charging to 100% to calibrate (weekly or biweekly), and daily charges to 70–80% to minimize chemical stress on the cells.
It's basic battery physics, accentuated in LFPs:
It's a normal behavior documented in the manual.
It's normal. In extreme cold, voltage rises faster during charging. The system (BMS) cuts off charging for safety and marks 100% because at that temperature, the battery no longer safely accepts more energy, even if it could technically hold more if it were warm.
