About this replacement
Custom Battery Pack LR14/5S1P — 7.5V Alkaline Replacement Battery
This is a 7.5V, 5500mAh alkaline battery pack built in a 5S1P configuration — five LR14 (C-size) cells wired in series. It replaces OEM packs in professional equipment, emergency lighting, and portable devices specced for this exact voltage rail. Fit model is not specified; confirm your device calls for a 7.5V alkaline pack before ordering.
- 5S1P series stack: Five LR14 cells in series produce the 7.5V nominal output. No parallel branches means the pack voltage is the sum of all five cells — if any one cell runs low, total pack voltage drops faster than a single-cell design would.
- Bench tested on actual hardware: We ran the pack under steady load and measured cell balance across all five stages. Voltage held within spec across the draw cycle, and no cell dropped below threshold before the others.
- First-use alkaline conditioning: Alkaline packs ship at storage voltage, not peak. On first install, some devices with voltage-sensing circuits read the pack as low. Run one full discharge-to-cutoff cycle before trusting any capacity or fuel gauge indicator on the host device.
Pack running at lower voltage than rated on first install
Alkaline cells ship at storage voltage — typically 0.5–1% below nominal per cell. Across five series cells, that small per-cell gap adds up to a measurable pack-level drop. Devices with tight voltage-acceptance windows may flag the pack as low or refuse to operate. Let the device draw from the pack through one full cycle; cell voltage stabilises as the electrochemical reaction reaches steady state.
Device not accepting the pack after swap
Some devices run a voltage range check at power-on before allowing operation. If the pack was stored cold or sat on a shelf for an extended period, resting voltage can sit just below the device's acceptance threshold. Warm the pack to room temperature — above 18°C — and re-seat it firmly. If the device still rejects it, check that the terminal contacts are clean and making full contact; a partial connection drops apparent voltage further and triggers the same fault.