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Grey rectangular lithium-ion battery with rounded edges and recessed contacts

Cameron & Co

Cameron & Co DS-CS-RTB402PX 40V 4Ah Li-ion battery

SKU CH-XVER-2WMNC MPN DS-CS-RTB402PX

A 40V 4Ah lithium-ion replacement battery for Ryobi 40V chainsaws, blowers and leaf mulchers

  • 40 V 4 Ah lithium-ion chemistry powers demanding garden tools
  • 160 Wh capacity extends run-time for chainsaws and blowers
  • Direct fit for Ryobi 40 V models including RY40002 and OP4026 series
  • Replaces original BPL3626, BPL3640 and BPL3650 packs without modification
  • Compact 168 × 98 × 81 mm grey housing keeps the tool balanced

40V 4Ah lithium-ion power tool battery

This Cameron & Co DS-CS-RTB402PX is a 40.0V 4000mAh lithium-ion battery built for Ryobi 40V outdoor equipment. It delivers 160.00Wh of energy in a grey pack measuring 168.47 x 98.43 x 81.08mm. The unit suits owners of compatible chainsaws, blowers, mulchers and vacuums who need a direct replacement or spare.

Replaces Ryobi BPL3626 BPL3640 BPL3650

It fits a long list of Ryobi 40V tools including the 14 IN brushless chainsaw, 20 IN brushless models, 500 CFM and 625 CFM jet fans, backpack blower, VAC ATTACK leaf mulcher and numerous RY40xxx and OP40xxx model numbers. The jump is worth it when an original pack no longer holds charge or when a second battery keeps a job running without downtime.

4Ah capacity runs brushless chainsaws

At 4000mAh the pack comfortably powers a 14 IN brushless chainsaw or a 500 CFM jet fan through typical garden tasks. Runtime drops on the 625 CFM blower or during continuous heavy cutting, so users planning extended sessions should keep a spare charged.

Highlights

  • 40 V 4 Ah lithium-ion chemistry powers demanding garden tools
  • 160 Wh capacity extends run-time for chainsaws and blowers
  • Direct fit for Ryobi 40 V models including RY40002 and OP4026 series
  • Replaces original BPL3626, BPL3640 and BPL3650 packs without modification
  • Compact 168 × 98 × 81 mm grey housing keeps the tool balanced

Specifications

BrandCameron Sino
ModelDS-CS-RTB402PX

Questions about this item

Will the 168.47 x 98.43 x 81.08 mm pack fit my RY40200 chain saw battery bay?

Yes, the DS-CS-RTB402PX matches the original Ryobi 40 V form factor so it slides into the RY40200 and all other listed 40 V tools without modification

How do I install it and what is the common mistake?

Align the pack rails with the tool guide slots, push until the latch clicks, then tug gently to confirm lock; the frequent error is stopping at the first detent instead of the full click

What replacement will this 4000 mAh Li-ion pack need later?

After several hundred charge cycles the cells will hold less than 80 % of the original 160 Wh; at that point swap in another DS-CS-RTB402PX or genuine OP4026 pack

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