I'm sure this one's fine. http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_894769_langId_-1_categoryId_255205 I have an older model that looks similar, and it's worked fine for years. If your battery's flat though, it might be knackered. How old is it? It might be time to replace it.
@bq started
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I'm sure this one's fine. http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_894769_langId_-1_categoryId_255205
I have an older model that looks similar, and it's worked fine for years.
If your battery's flat though, it might be knackered. How old is it? It might be time to replace it.