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मराठी How Many Years Can a Battery Last With One Charge and Discharge Cycle Per Day
If a battery completes one full charge and discharge cycle every day, the simple calculation is easy. A pack rated for 4,000 cycles could theoretically operate for about 11 years. A 6,000-cycle pack reaches roughly 16 years.
That calculation gives you a useful starting point, not a guaranteed replacement date. Real service life also depends on depth of discharge, cell chemistry, temperature, charging voltage, and how well the BMS controls the pack. For most modern LFP energy storage systems, daily cycling commonly supports around 8 to 15 years of practical service when the system operates within its specified limits.
The Cycle Count Only Tells Part of the Story
One cycle usually means one full equivalent cycle, or 100% cumulative throughput. Two discharges of 50% each count as approximately one full cycle. This distinction matters because a battery that discharges only 70% of its capacity each day puts less stress on its cells than a battery that reaches 100% depth of discharge every day.
Use this calculation for a first estimate:
Expected cycle-based life = rated cycle count / cycles per year
At one cycle per day, the system completes about 365 cycles per year. A 5,000-cycle LFP battery therefore has a theoretical cycle-based life of about 13.7 years. That figure often assumes 25°C, a moderate charge and discharge rate such as 0.5C, and a defined end-of-life capacity, commonly 70% or 80% of the original capacity.
| Battery configuration | Typical cycle rating | Theoretical life at one full cycle per day | Practical planning range |
|---|---|---|---|
| LFP home storage pack | 4 000 siklusse | 11 years | 8-10 years |
| LFP commercial rack battery | 6 000 siklusse | 16 years | 10-15 years |
| NMC battery system | 2,000-3,000 cycles | 5.5-8.2 years | 4-7 years |
The battery may still work after the planning range ends. It simply stores less energy and may no longer meet the output or backup time required by the application. Calendar ageing can also limit life before the rated cycle count is reached, especially when the pack stays at a high state of charge in a hot enclosure.
What an OEM or ODM Buyer Should Check
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Gereelde Vrae
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