I think WD-40 is best to remove the adhesive after the battery is out. Some people said they use it instead of the solvent. Also I saw on a youtube video that its best to use a syringe and measure the adhesive remover (2.5 ml per battery section or 5.0 ml max per section if you apply more than once). If that makes sense. That helped a lot to measure the application of the adhesive remover