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Small rectangular lithium battery, silver finish, 46mm by 36mm, 5mm thick

Estry

Estry standard battery 3.7V 850mAh for Dell PowerEdge R520 R420 R320 R720 R820 T110 II M620 PERC H810

SKU CH-A06X-TRPYF

3.7 V 850 mAh lithium replacement battery for Dell PowerEdge R520, R420, R320, R720, R820, T110 II, M620 and PERC H810 servers

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity850 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • Direct replacement for Dell PERC H810 RAID controller cache
  • 7 V 850 mAh lithium cell matches original voltage and capacity
  • Fits PowerEdge R520, R420, R320, R720, R820, T110 II, M620
  • Certified to ISO 9001, RoHS, CE, UN38.3 and MSDS standards
  • Compact 46.12 × 36.2 × 5.14 mm, 42.8 g design installs in existing slot

Direct replacement battery

The Estry lithium cell is a 3.7V 850mAh unit built to match Dell part numbers 07VJMH 70K80 070K80 37CT1 H132V 7VJMH T40JJ for PowerEdge R520 R420 R320 R720 R820 T110 II M620 and PERC H810 systems. It supplies the CMOS and RAID controller backup power those servers expect.

Capacity and voltage limits

Rated at 850mAh and 3.7V the cell delivers 3.07Wh which is the energy budget the original design allocates for timekeeping and cache preservation. The chemistry is lithium so the voltage curve and self-discharge rate follow that standard and no higher-capacity alternative fits the same footprint.

Simple two-wire installation

The pack measures 46.12 by 36.2 by 5.14mm and weighs 42.8g so it seats in the existing holder without modification. Polarity must match the original connector; reversing the leads is the common error that prevents the server from recognising the battery. RoHS CE ISO9001 UN38.3 and MSDS certifications confirm compliance but do not change the physical fit.

How it compares

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

Price $12.99
Pricier than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameDELL
Product typeBatteries
Power
Battery typeLithium
Battery capacity850 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

Should I pick the 850mAh or the 830mAh version for my PowerEdge?

Both figures describe the same cell; the 850mAh rating on the product name and the 830mAh rating in the detailed specs refer to one 3.7V lithium pack weighing 42.8g.

How long will the 3.07Wh capacity keep the RAID controller cache alive during a power loss?

The 3.7V 830mAh pack stores 3.07Wh, which is sized to hold PERC H810 cache data until mains power returns or the system shuts down cleanly.

Does the 3.7V lithium pack use a standard connector that fits the R720 and M620 motherboards?

Yes, the 46.12 x 36.2 x 5.14mm pack matches the original Dell part numbers 07VJMH, 70K80, 37CT1, H132V and T40JJ used across those servers.

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