Battery for Siemens Gigaset fits SL1 / SL3 / SL375 / SL75 WLAN / S44 / SL37H / V30145-K1310-X250 / S55 / C55 / A55 / A65 || || 3.7V 750mAh Li-Ion technology || || compatible & precisely || from the latest production
3-4 years ago, I bought a no-name battery or another vendor also for the SL1. The details were similar to this rechargeable battery, so overheating protection, overcharge protection and short circuit protection. Now even this replacement battery slow