{"product_id":"bosch-universal-pump-18v-replacement-battery-18v-5000mah-li-ion","title":"Bosch 18V 5000mAh Cordless Air Pump Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBosch Universal Pump 18V — 18V Li-ion Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eAn 18V, 5000mAh (90Wh) lithium-ion battery built to fit the Bosch Universal Pump 18V cordless compressed air pump and other tools on the same 18V platform. The Universal Pump pushes up to 150 PSI and 30 l\/min, so it draws hard — capacity matters here. This 5Ah cell gives that pump more working headroom than the smaller stock packs.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBroad 18V platform compatibility:\u003c\/strong\u003e These models — from the Universal Pump to the Easy Spray, Universal Fan, and Easy Drill — all share the same 18V sliding rail connector and BMS handshake, which is why one battery spans the lineup.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e We ran full charge\/discharge cycles — the BMS held voltage steady under pump load and cut cleanly at the low-voltage threshold without false stops.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use conditioning for Li-ion:\u003c\/strong\u003e Charge the pack fully before the first session and run it down through normal use before recharging — this lets the BMS calibrate its state-of-charge tracking accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy capacity matters on a high-draw pump\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA compressed air pump working near 150 PSI pulls sustained current — more than most drills or fans on the same platform. A 5Ah pack at 18V stores 90Wh, giving the pump substantially more energy per charge than a 2Ah or 3Ah option. The BMS on this pack is rated to handle the continuous draw without throttling output voltage prematurely.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePump cuts out mid-use — what's happening and how to fix it\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the pump stops suddenly before the task is done, the BMS is likely tripping its over-discharge protection due to a voltage sag under load. This often happens with a partially depleted or cold battery, not a faulty one. Warm the pack to room temperature and start a session with a fully charged battery. If cutouts continue, check the rail contacts on both the battery and the tool for debris or corrosion — a dirty connection increases resistance and triggers the same protection circuit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175810891866,"sku":"BWCS-BMU180PH-1","price":110.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175810924634,"sku":"BWCS-BMU180PH-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175810957402,"sku":"BWCS-BMU180PH-3","price":143.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BMU180PH-1.webp?v=1775236243","url":"https:\/\/batteryweb.com\/products\/bosch-universal-pump-18v-replacement-battery-18v-5000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}