Gel Dryfit technology was developed by Sonnelschein and is recognised as the world leader in its field.  There is simply no other Gel battery that can rival this product some of the ranges in Sonnerschein have design lives of 12 years where a high level of reliability is required for such as medical applications, Sonnerschein is often the product of choice. This product range is the batteries equivalent of your Ipolo simply the best, as the requirement for the batteries is often backup batteries for hospital theatres and lighting. 
If you require any information or help one of our senior managers will come out to discuss your requirements in detail.  Please contact Customer Service who will be more than happy to arrange a visit at your convenience.