&lt;ul&gt; &lt;li&gt; Model: ASUS B21N1329 / Part No. 0B200‑00840000 &lt;/li&gt; &lt;li&gt; Battery Type: Lithium-Ion &lt;/li&gt; &lt;li&gt; Voltage: 7.6 V &lt;/li&gt; &lt;li&gt; Capacity: 30 Wh (~4000 mAh) &lt;/li&gt; &lt;li&gt; Battery Cells: Typically 2–4 cells (model-dependent) &lt;/li&gt; &lt;li&gt; Compatible With: ASUS X453M, X453MA, X403M/MA, X503M, X553M/MA, F453/MA, F553M/MA, P553, D553M series &lt;/li&gt; &lt;li&gt; Color: Black &lt;/li&gt; &lt;li&gt; Protection Features: Overcharge, Overheat &amp; Short-Circuit safeguards &lt;/li&gt; &lt;li&gt; Warranty: 6 Months &lt;/li&gt; &lt;/ul&gt;