I just buy the cheap, presumably Chinese, ones, biggest physical size that fits. They seem to last about 5 years with no looking after at all. Charge well enough and keep the lights bright. I only changed the last one because I thought it was to blame for the dire electronic ign. I bought not working. In fact although it was slightly defective it still worked perfectly. Having said all that, I take it you have a mag for sparks 😳
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