{"product_id":"maxon-sp300-replacement-battery-72v-2500mah-ni-mh","title":"Maxon SP300 Compatible Battery 7.2V 2500mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMaxon SP300 \/ SP310 \/ SP320 \/ SP330 Series — 7.2V Ni-MH Replacement Battery (WWH-ACC200)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V, 2500mAh Ni-MH battery replaces the WWH-ACC200 pack in Maxon SP300, SP310, SP320, and SP330 portable two-way radios. It fits the same housing footprint and uses the same contact layout as the original. Voltage and capacity match the factory spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSP300 series compatibility:\u003c\/strong\u003e\n    The SP300, SP310, SP320, and SP330 all share the same battery bay dimensions, contact pin arrangement, and 7.2V power rail. One pack fits every model in the series without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack under simulated PTT load on the SP310. The BMS handled the transmit current spike without tripping, and the charger dock accepted the handshake after a normal contact-seat cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the dock:\u003c\/strong\u003e\n    If the charger shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The SP300 series dock requires a clean contact surface to complete the BMS handshake before it will begin charging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SP300 cuts out mid-transmission on a new WWH-ACC200\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Ni-MH cell ships at storage voltage — typically 1.0–1.1V per cell, which puts a six-cell 7.2V pack somewhere around 6.3V at rest. When PTT is pressed, the transmit current draw causes a voltage sag that can pull the pack below the radio's low-voltage cutoff threshold before the cells have been properly conditioned. The radio interprets this as a depleted pack and drops the transmission. Running one or two full charge-discharge cycles brings the cells to working capacity and raises the resting voltage enough to handle the TX current spike cleanly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting this pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SP300 series reads battery level using voltage thresholds, not a fuel gauge chip. A new Ni-MH pack at storage voltage will read one bar low even when fully seated and undamaged. This is not a fault with the cell — it reflects the actual resting voltage of an unconditioned pack. Charge the battery fully in the dock until the LED goes green, then check the bar indicator again. After a full charge cycle, the indicator should read at the expected level.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426349940826,"sku":"BWCS-MSP310TW-1","price":62.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426349973594,"sku":"BWCS-MSP310TW-2","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426350006362,"sku":"BWCS-MSP310TW-3","price":82.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MSP310TW-1.webp?v=1779930880","url":"https:\/\/batteryweb.com\/products\/maxon-sp300-replacement-battery-72v-2500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}