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
Small rectangular lithium battery pack flat silver finish 53 by 34 by 4.8mm

Estry

Estry RT-MWK08 standard battery 900mAh 3.7V SL-1102A

SKU CH-W3AT-42KGB MPN RT-MWK08

Replacement lithium battery for RT-MWK08 mini keyboard, 900 mAh at 3.7 V with overcharge and short-circuit protection

  • Battery pack size1-pack
  • Battery typeLithium
  • Battery capacity900 mAh
  • Battery voltage rating3.7
  • Product typeBatteries
  • Exact-fit replacement for RT-MWK08 keyboards
  • 900 mAh lithium cell delivers 3.33 Wh runtime
  • 0 x 34.0 x 4.8 mm slim profile
  • Built-in protection against overcharge and short circuit
  • Certified to ISO9001, RoHS, CE, UN38.3, MSDS

Compatible replacement battery

This Estry RT-MWK08 lithium battery replaces the SL-1102A pack in compatible mini keyboards. It supplies 3.7V and 900mAh capacity in a single unit. The pack measures 53.0 x 34.0 x 4.8mm and weighs 42.0g. It carries ISO9001, RoHS, CE, UN38.3 and MSDS certifications.

Suitability and limits

Owners of a mini keyboard using the RT-MWK08 or SL-1102A battery can use this as a direct replacement. Buyers needing a different voltage, a higher capacity or a multi-pack bundle should look elsewhere. The fixed dimensions mean it will not fit devices with a different battery cavity.

Deciding specification

The 900mAh capacity at 3.7V determines whether this cell matches the original runtime and power profile. Verify the part number SL-1102A and model RT-MWK08 on the existing battery before ordering.

How it compares

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

Price $10.99
Typical for this category: the median of 10,440 items is $10.99.

Specifications

Product
Brand nameMini Keyboard
Product typeBatteries
Power
Battery typeLithium
Battery capacity900 mAh
Battery voltage rating3.7
In the box
Battery pack size1-pack

Questions about this item

Is this the correct 900mAh replacement for the RT-MWK08 mini keyboard?

Yes, this 900mAh lithium cell is built to the original specifications for the RT-MWK08 and matches part number SL-1102A exactly.

What does the 900mAh rating deliver in daily use?

The 900mAh capacity at 3.7V provides 3.33Wh of energy, powering the compatible mini keyboard through typical sessions between charges.

Does the built-in protection circuit limit charging voltage?

Integrated overcharge, over-discharge, over-voltage and short-circuit protection manages the 3.7V lithium cell within safe limits during every cycle.

More in Household Batteries & Chargers

Similar items