Capacity & SOH
40 articles
How Parallel Strings Can Lead to Uneven SOH
When connecting solar batteries in parallel, you expect each unit to share the electrical load equally.…
How to Identify “Lazy Battery” Syndrome (Voltage Depression)
If your solar battery rapidly loses percentage under moderate loads, triggers early inverter shutoffs, or shows…
Why One Weak Cell Limits the Entire Battery’s Capacity
When your solar storage system unexpectedly shuts down early in the evening or stops charging before…
Why Over-Cooling Can Actually Reduce Usable Capacity
Because heat is a well-known enemy of battery life, solar installers often go to great lengths…
How BMS Balancing Algorithms Preserve Capacity
A residential solar battery is made of individual lithium cells linked in series to reach operating…
The Impact of Partial State of Charge (PSOC) on LFP Batteries
Lithium Iron Phosphate (LiFePO4 or LFP) is widely considered the safest and most durable chemistry for…
Measuring Capacity: Why Your “10kWh” Battery Only Holds 9kWh
One of the most common complaints among residential solar storage owners is the “missing kilowatt-hour.” You…
Understanding “End of Life” (EOL) Criteria for Solar Batteries
When a residential solar battery reaches “End of Life” (EOL), it rarely fails catastrophically or stops…
Why High Constant Loads Degrade SOH Faster
Running a steady baseline load—like a central air conditioner, a pool pump, or an EV charger—for…
How Often Should You Perform a Full Capacity Test?
Many solar storage owners never test their batteries, assuming the percentage on their phone screen is…
The Role of SEI Layer Growth in Battery Aging
Every time your solar battery charges and discharges, an invisible, microscopic process takes place on the…
Understanding “Throughput” vs. “Cycle” Warranties
When comparing solar battery warranties, you will typically encounter two different methods for measuring how much…