"storage heater" or not???

We have a very efficient wood burner and have thought about supplementing this with what we would call in England a "storage heater". Is the "radiateur à inertie céramique" the French equivalent? Am I right in thinking there is no direct equivalent and that this is a radiator with a ceramic plate which heats up but can be used in the day as well as conserving heat in the small hours when the compteur is on creuse? Our idea is that this would provide a bit of warmth for when we arise in the morning and before we get chance to rekindle the wood burner. Thanks in ant. K.

"Radiateur à accumulation"  that's the type.
"radiateur à inertie céramique" is one of several models.
I saw on DIY store sites that the term 'inertie " is also used now instead "accumulation".

Lot of models! Look
http://www.leroymerlin.fr/v3/p/produits/chauffage-plomberie/chauffage-et-climatisation-fixe/radiateur-electrique-l1308217165?pageTemplate=Famille%2FChauffage+%26+Plomberie&resultOffset=0&resultLimit=50&resultListShape=PLAIN&nomenclatureId=17430&priceStyle=SALEUNIT_PRICE&fcr=1&*17430=17430&*21256=21256&*4294804598=4294804598#items-wrapper

Atlantic is a well-know brand
http://www.atlantic.fr/multi-energies/radiateur-electrique-accumulation.html

Thanks very much for all this. K

Hi Blakevine
Simmo here, we have three of these storage heaters, we only use two of them. These are sufficant along with our 9kw godin wood fire to keep us warm and cosy even down to winters of -20. We use them in conjuntion with our EDF cheap rate and jobs a good'en.
Simmo in the cool Correze.