Milwaukee M12B4 - 12V 4.0Ah REDLITHIUM Battery
The M12 REDLITHIUM 4 Amp-hours Battery Pack is designed to use for industrial applications. Battery has a durable construction and delivers more work per charge. Compact design of the battery works in confined spaces and minimizes user fatigue. It operates at a cooler temperature with a rating as low as -18 degrees celsius.
The M12 REDLITHIUM 4 Amp-hours Battery Pack is designed to use for industrial applications. Battery has a durable construction and delivers more work per charge. Compact design of the battery works in confined spaces and minimizes user fatigue. It operates at a cooler temperature with a rating as low as -18 degrees celsius.
The M12 REDLITHIUM 4 Amp-hours Battery Pack is designed to use for industrial applications. Battery has a durable construction and delivers more work per charge. Compact design of the battery works in confined spaces and minimizes user fatigue. It operates at a cooler temperature with a rating as low as -18 degrees celsius.
The M12 REDLITHIUM 4 Amp-hours Battery Pack is designed to use for industrial applications. Battery has a durable construction and delivers more work per charge. Compact design of the battery works in confined spaces and minimizes user fatigue. It operates at a cooler temperature with a rating as low as -18 degrees celsius.
in 25 offers
The lowest price for Milwaukee M12B4 - 12V 4.0Ah REDLITHIUM Battery right now is $99.00 at poweruptools.com.au, compared across 20 retailers.
The all-time low was $23.99 on 19 June 2025 — today's price is 313% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 20 Oct 2026.
Last updated at 20/10/2026 14:53:28
Milwaukee M12B4 12V Li-Ion 4.0Ah REDLITHIUM Battery
Free delivery
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Milwaukee 12V 4.0Ah Lithium-Ion Battery M12B4
Delivery $14.95
Genuine Milwaukee M12b4 12v 4.0 Ah Red Lithium Genuine Battery
Delivery $21.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Milwaukee 12V Battery 4.0Ah 12V RED LI-ION M12B4 Genuine Original OEM Original
Free delivery between Fri – Tue
Milwaukee M12B4 - 12V 4.0Ah RedLithium Battery - C&L Tool Centre
Delivery between Fri – Tue $12
Milwaukee M12B4 12V Li-Ion 4.0Ah REDLITHIUM Battery
Free delivery
Milwaukee M12 4.0Ah REDLITHIUM-ION Battery Pack
Delivery $10
Milwaukee 12V RedLithium 4.0Ah Battery M12B4 With Overload Protection And Fuel Gauge
Free delivery between 27–30 Oct
Milwaukee M12 4.0Ah REDLITHIUM Battery - M12B4
Free delivery between 22–28 Oct
Milwaukee M12B4 - 12V 4.0Ah Battery
Free delivery between 23 Oct – 4 Nov
originally posted on ffx.co.uk
Great original Milwaukee product at an incredible price the cheapest price on the market I will differently be purchasing more.
originally posted on ffx.co.uk
A worthwhile upgrade for the M12 range of tools when doing a bigger job as the standard 2AH batteries run down quite quickly.
originally posted on ffx.co.uk
Battery seems well made and powerful enough for hackzall tool. Time will tell on if it lasts better than some batteries I've used. Good price too.
| Power Source | Cordless |
| Power Voltage | 12V |
| Battery Voltage | 12V |
| Battery Type | Li-Ion |
| Battery Capacity | 4.0 Ah |
Milwaukee M12B4 12V Li-Ion 4.0Ah REDLITHIUM Battery
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Milwaukee 12V 4.0Ah Lithium-Ion Battery M12B4
Delivery $14.95
Genuine Milwaukee M12b4 12v 4.0 Ah Red Lithium Genuine Battery
Delivery $21.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Milwaukee 12V Battery 4.0Ah 12V RED LI-ION M12B4 Genuine Original OEM Original
Free delivery between Fri – Tue
Milwaukee M12B4 - 12V 4.0Ah RedLithium Battery - C&L Tool Centre
Delivery between Fri – Tue $12
Great original Milwaukee product at an incredible price the cheapest price on the market I will differently be purchasing more.
A worthwhile upgrade for the M12 range of tools when doing a bigger job as the standard 2AH batteries run down quite quickly.
Battery seems well made and powerful enough for hackzall tool. Time will tell on if it lasts better than some batteries I've used. Good price too.
Ive bought after market batteries before because they were cheaper but on both occasions they failed in a short time, so this genuine one is just better value all round, plus it fits better performs better lasts longer and charges quickly
Worth the additional money for a much improved run time.
Makes a 12v impact driver a different machine….Well worth the upgrade from 2Ah….
Great replacement or update for any 12 volt milwaukee tools. Got the 4.0ah for my 3/8 ratchet to give extended usage between charging after struggling with the basic 2.0ah. Advantage of the 4.0ah is its flat base, so when attached to the ratchet it can be stood up.
Brilliant addition to the m12 kit, works great, makes the m12 guns a bit more stable as weighted better and allows the tool to Also stand up itself lol
Great product excellent build quality Great value for money
Genuine milwaukee batteries perform a lot better than the Chinese knock off versions. This battery is used in higher current drawing tools like my Hacksall and is up there with the 6ah version
| Power Source | Cordless |
| Power Voltage | 12V |
| Battery Voltage | 12V |
| Battery Type | Li-Ion |
| Battery Capacity | 4.0 Ah |
