Makita BML240 Replacement Battery 24V 3000mAh Ni-MH
This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.
WECARE5
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Makita BML240 Replacement Battery 24V 3000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Makita BML240 Replacement Battery 24V 3000mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
24V
Amp
3000mAh
Makita BML240 / BSS730 Series — 24V Ni-MH Replacement Battery (193127-4)
This is a 24V, 3000mAh Ni-MH battery built to fit the Makita BML240 cordless work light, BSS730 circular saw, BMR100 site radio, and over 60 additional Makita 24V platform tools. It replaces OEM part numbers 193127-4, 2417, 2420, 2430, BH2420, BH2433, and related variants. Capacity is sourced from product data at 3000mAh (72Wh).
- 24V Makita platform fit: These models share the same 24V rail, slide-in connector geometry, and BMS handshake protocol. The battery's cell configuration and terminal layout match the original pack spec, so the tool's onboard electronics recognise it without recalibration.
- Bench tested on actual hardware: We ran this pack on a BSS730 circular saw under repeated load cycles. The BMS held stable across motor-start inrush spikes and returned consistent voltage at the rail contacts throughout discharge. No nuisance trips were recorded during testing.
- Ni-MH reconditioning tip: Makita 24V Ni-MH packs develop voltage depression if repeatedly charged before fully discharged. Run the tool to low-battery cutoff at least once every five cycles to prevent cell memory and maintain usable capacity.
BMS cutoff on BSS730 motor-start inrush surge
The BSS730 circular saw draws a high inrush current in the first 80–120 milliseconds of blade spin-up. On a pack that has been in storage, the BMS may read this spike as an overcurrent fault and cut the output before the blade reaches full speed. This happens because resting cells have elevated internal resistance, which amplifies the apparent current draw at the BMS sensor. Condition the pack with two light-load discharge cycles before running the saw at full depth of cut.
BML240 work light dims mid-use without warning
Gradual dimming on the BML240 during a work session usually points to voltage sag, not a depleted pack. Ni-MH cells under moderate load drop rail voltage when internal resistance climbs — this triggers the light's undervoltage circuit before the cells are fully discharged. Check the terminal contacts on both the battery and the tool for corrosion or debris, as poor contact resistance amplifies sag. Clean contacts with isopropyl alcohol and confirm the open-circuit voltage reads at least 25.2V before recharging.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Makita
- Manufacturer: CS
- Series: Standard
- Color: White Blue
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Makita BSS730 cuts out the moment I pull the trigger on a thick cut — is the battery tripping?
Yes — this is a BMS overcurrent trip caused by motor-start inrush on a high-resistance cell pack. Ni-MH packs coming off storage have elevated internal resistance, which makes the inrush current spike look larger than it is to the BMS protection circuit. Run two full discharge-recharge cycles on lighter cuts first to let cell resistance normalise. After conditioning, trigger pull on full-depth cuts should hold without tripping.
The charger's indicator never turns green — it just blinks and stops on this new pack.
A blinking charger that won't advance to green usually means the pack's resting cell voltage has dropped below the charger's acceptance threshold during storage. Makita 24V Ni-MH chargers require a minimum cell voltage to begin a full charge cycle. Leave the pack on the charger for 30 minutes — some models run a trickle pre-charge to bring cells up to acceptance voltage before switching to fast charge. If the charger still rejects it, measure open-circuit voltage across the battery terminals; anything below 19V indicates the pack needs a manual trickle charge to recover.
The BML240 work light runs noticeably dimmer in cold weather even on a fresh charge — what's happening?
Cold temperatures increase the internal resistance of Ni-MH cells, which drops the voltage delivered to the load even when cell charge is full. Below 5°C, the BML240 may receive 10–15% less usable voltage from the same pack compared to room temperature operation. Store the battery indoors and fit it to the light just before heading onto the job site. A pack warmed to at least 15°C before use will deliver full output voltage across the LED driver circuit.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
