Estry Battery Replacement for TDK Life on Record A73 6AA-HHC 7.2V 2000mAh

Replacement for TDK A73 Boombox

This 7.2V 2000mAh Ni-MH pack replaces the original 6AA-HHC battery in the TDK Life on Record A73 boombox. It matches the factory voltage and capacity so the speaker powers on and runs exactly as designed. The single-pack format drops straight into the existing compartment without wiring changes. Builders needing a different voltage or a multi-pack kit should look elsewhere.

2000mAh capacity and 14.4Wh energy

The 2000mAh rating delivers the same playback headroom the original cell provided, supporting typical listening sessions at moderate volume. Runtime scales with output level; high-volume use will drain the pack faster than the rated capacity suggests. The 14.4Wh figure confirms the total energy available for budgeting charge cycles. Users expecting all-day festival volume without recharging will find the limit here.

Protection circuit and certifications

Integrated overcharge, over-discharge, over-voltage and short-circuit safeguards protect both the cells and the boombox electronics during charge and discharge. The pack carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications, confirming compliance with international safety and transport standards. No charging cable, dock or firmware utility is bundled; the boombox's own charger handles replenishment. Buyers wanting an external charger or smart-app monitoring must source those separately.