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Rectangular lithium-polymer battery pack with silver finish, thin profile and connector ribbon

Cameron Sino A3500 cell phone battery L13D1P31 3550mAh 13.49Wh

SKU CH-DA22-7HTNR MPN A3500

A 3550 mAh lithium-polymer replacement cell for select Lenovo tablets including the IdeaPad S5000 and Tab 2 A7 series

  • Typelithium_polymer
  • Capacity3550mAh / 13.49Wh
  • Weight95
  • Replaces original battery in seven Lenovo tablet models
  • 3550 mAh capacity restores full runtime between charges
  • 49 Wh lithium-polymer cell matches factory energy rating
  • 4 V nominal voltage ensures stable device operation
  • Built-in protection guards against overcharge, over-discharge and short circuits

Replacement battery for Lenovo tablets

The Cameron Sino A3500 lithium-polymer cell replaces the original L13D1P31 pack in the IdeaPad S5000, IdeaTab 2 A7-30, Tab 2 A7-20 and Tab A7-50 models. It delivers 3550mAh at 7.4V for 13.49Wh of capacity. The fully decoded chip reports charge status exactly like the factory unit.

Thermal behaviour and power draw

Lithium-polymer chemistry keeps internal resistance low during normal discharge, so the pack stays cool under typical tablet workloads. Over-charge, over-discharge, over-voltage and short-circuit protection circuits prevent excess heat without adding audible noise. The cell weighs 59.6g and measures 101.60 x 86.88 x 3.50mm.

Installation and system fit

The battery slots into the existing compartment and connects to the original socket; no soldering or adapter cables are required. Shock-absorbing foam in the retail box protects the cell during transit. Buyers who need a different part number or a higher-capacity pack should verify their device specifications before ordering.

Highlights

  • Replaces original battery in seven Lenovo tablet models
  • 3550 mAh capacity restores full runtime between charges
  • 49 Wh lithium-polymer cell matches factory energy rating
  • 4 V nominal voltage ensures stable device operation
  • Built-in protection guards against overcharge, over-discharge and short circuits

Specifications

BrandCameron Sino
ModelA3500, A3500FL 7", A7-50 3G, IdeaPad S5000, IdeaTab 2 A7-30, TAB 2 A7-20, Tab A7-50
Typelithium_polymer
Part NumberL13D1P31
Capacity3550mAh / 13.49Wh
Weight95

Questions about this item

How do I install the L13D1P31 battery and what step do people often miss?

Open the tablet, disconnect the old pack, align the 101.60 x 86.88 x 3.50 mm replacement, then firmly seat the connector — many forget to press it fully home.

What maintenance or replacement will this 3550mAh lithium polymer cell need later?

Expect gradual capacity loss after hundreds of cycles; when run-time drops below usable levels, replace with another L13D1P31 pack.

What limit appears first during sustained use of this 7.4 V battery?

The built-in protection circuit will cut output if temperature or current exceeds safe thresholds, preventing damage during heavy load.

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