Replaces OEM # DYNZ02, AHA42227028, AHA42227027, 916TA135H Fits: MICROSOFT SURFACE LAPTOP GO 12.4' (Model 1943), SURFACE LAPTOP GO Model 1943, SURFACE LAPTOP GO 1943, SURFACE LAPTOP GO 2 (Model 2013), SURFACE LAPTOP GO 2 Model 2013, SURFACE LAPTOP GO 2 2013 Specs: 7.58V, 5235MAH, 39.79WH, 4 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety