NIMH CELL AND CHARGER SELECTION RECORD
Yenra | Updated September 7, 2026
Article: https://yenra.com/nimh/

PURPOSE AND INSTRUCTIONS
Use for supported ordinary consumer equipment. Read the device, cell and charger instructions together. Hybrid-vehicle traction packs require the vehicle's approved professional service route; this record is not a pack-building or charging procedure.

DEVICE AND CELL SET
Device model / approved battery types / required battery setting:
Cell model / region / size / nominal voltage (V):
Capacity (mAh), minimum or typical:
Capacity test current / cutoff / temperature / standard:
Self-discharge statement and storage conditions:
Matched-set identifier / purchase date / number of cells:
Expected duty / idle period / temperature:

CHARGER
Exact model / regional version / manual:
Explicitly supported cells and chemistries:
Slot independence or required pairing:
Completion indication / fault indications and prescribed response:
Permitted charging conditions:
Never infer a charging setpoint from nominal cell voltage.

FICTIONAL CHECK
A supported device connects four identical 1.2 V, 2,000 mAh cells in series.
Set voltage = 4 x 1.2 = 4.8 V. Set capacity remains 2 Ah.
Nominal energy = 4.8 x 2 = 9.6 Wh.
At hypothetical 2 W average load, ideal arithmetic gives 4.8 hours.
Actual runtime depends on cutoff, peaks, losses, temperature and condition; use representative supported-device observations instead of this ideal prediction.

OBSERVATION LOG
Date / set / initial charge condition / device mode / ambient conditions:
Useful runtime or sessions / warning behavior / charger result:
Comparison with known-good supported set:
Decision / replacement or collection route:
Keep cells matched according to maker guidance; do not mix chemistry, age, capacity or charge states. Follow the exact fault instructions rather than forcing charge.

REFERENCE CONTEXT
The linked article explains the comparisons and limits. Check exact project or equipment documents before using a specification.
Energizer’s NiMH application handbook
https://data.energizer.com/pdfs/nickelmetalhydride_appman.pdf
Panasonic’s eneloop FAQ
https://www.panasonic.com/global/energy/products/eneloop/en/faq.html
Panasonic’s BQ-CC55 documentation
https://www.panasonic.com/global/energy/products/eneloop/en/lineup/charger-bq-cc55.html
EPA’s household battery guidance
https://www.epa.gov/recycle/used-household-batteries