We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Three rectangular 9V NiMH batteries in blue wrap

Maha Energy Corp.

Maha Energy Corp. Powerex 9V NiMH 300mAh 3-pack

SKU CH-1DT2-1DPCC

Three 8.4 V NiMH 9 V cells at 300 mAh each, pre-charged with no memory effect and long shelf life

  • Battery type9 V
  • 300 mAh capacity powers 9 V devices
  • NiMH chemistry avoids memory effect
  • Pre-charged cells hold charge during storage
  • 4 V output matches 9 V requirements
  • Three batteries included for immediate use

Everyday power for 9 V devices

This three-pack supplies 9 V nickel-metal-hydride cells rated at 300 mAh each. They arrive precharged and hold a near-full charge during extended storage. The chemistry avoids memory effect so partial recharges do not reduce usable capacity. They suit smoke alarms, wireless microphones, guitar pedals and similar 9 V equipment.

Charger compatibility expands options

The cells work with the Powerex MH-C1090F ten-bank charger or the MH-C490F Stealth charger. Using either unit enables fast and efficient full charges across multiple bays. Without a dedicated Powerex charger the batteries still accept standard NiMH charging, but the quoted fast-charge benefit is not guaranteed.

NiMH voltage and capacity set limits

Each cell delivers a nominal 8.4 V, lower than the 9 V of primary alkaline types, so some voltage-sensitive gear may show reduced headroom. The 300 mAh rating limits runtime in high-drain devices compared with higher-capacity chemistries. Very low self-discharge makes them reliable for standby use, but they cannot match the single-use energy density of lithium primaries.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 90% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery type9 V

Questions about this item

How often will I need to replace these 300mAh NiMH cells?

They have no memory effect and hold a near-full charge during extended storage, so replacements are only needed when capacity drops after many recharge cycles.

What limits runtime during continuous high-drain use?

The 300mAh capacity sets the energy ceiling; sustained loads will exhaust the charge faster than lower-drain applications.

Do these 8.4V batteries get hot or draw extra power when left in a charger all day?

They are designed for fast, efficient full charges with compatible Powerex MH-C1090F or MH-C490F chargers and do not generate excess heat during normal charging.

More in Household Batteries & Chargers

Similar items