diff --git a/extern/storage-sealing/commit_batch.go b/extern/storage-sealing/commit_batch.go
index ad0b00e88..6b3cef6d5 100644
--- a/extern/storage-sealing/commit_batch.go
+++ b/extern/storage-sealing/commit_batch.go
@@ -22,12 +22,6 @@ import (
 	"github.com/filecoin-project/lotus/extern/sector-storage/ffiwrapper"
 )
 
-var (
-	// TODO: config!
-
-	CommitBatchWait = 5 * time.Minute
-)
-
 const arp = abi.RegisteredAggregationProof_SnarkPackV1
 
 type CommitBatcherApi interface {
@@ -87,6 +81,11 @@ func (b *CommitBatcher) run() {
 	var forceRes chan *cid.Cid
 	var lastMsg *cid.Cid
 
+	cfg, err := b.getConfig()
+	if err != nil {
+		panic(err)
+	}
+
 	for {
 		if forceRes != nil {
 			forceRes <- lastMsg
@@ -101,7 +100,7 @@ func (b *CommitBatcher) run() {
 			return
 		case <-b.notify:
 			sendAboveMax = true
-		case <-time.After(TerminateBatchWait):
+		case <-time.After(cfg.CommitBatchWait):
 			sendAboveMin = true
 		case fr := <-b.force: // user triggered
 			forceRes = fr
diff --git a/extern/storage-sealing/sealiface/config.go b/extern/storage-sealing/sealiface/config.go
index f62911b70..1c0945db2 100644
--- a/extern/storage-sealing/sealiface/config.go
+++ b/extern/storage-sealing/sealiface/config.go
@@ -21,4 +21,9 @@ type Config struct {
 	AggregateCommits bool
 	MinCommitBatch   int
 	MaxCommitBatch   int
+	CommitBatchWait  time.Duration
+
+	TerminateBatchMax  uint64
+	TerminateBatchMin  uint64
+	TerminateBatchWait time.Duration
 }
diff --git a/extern/storage-sealing/sealing.go b/extern/storage-sealing/sealing.go
index d990cb02f..35ff15f51 100644
--- a/extern/storage-sealing/sealing.go
+++ b/extern/storage-sealing/sealing.go
@@ -152,7 +152,7 @@ func New(api SealingAPI, fc FeeConfig, events Events, maddr address.Address, ds
 		notifee: notifee,
 		addrSel: as,
 
-		terminator: NewTerminationBatcher(context.TODO(), maddr, api, as, fc),
+		terminator: NewTerminationBatcher(context.TODO(), maddr, api, as, fc, gc),
 		commiter:   NewCommitBatcher(context.TODO(), maddr, api, as, fc, gc, verif),
 
 		getConfig: gc,
diff --git a/extern/storage-sealing/terminate_batch.go b/extern/storage-sealing/terminate_batch.go
index 0e96e8384..3833109a1 100644
--- a/extern/storage-sealing/terminate_batch.go
+++ b/extern/storage-sealing/terminate_batch.go
@@ -21,14 +21,6 @@ import (
 	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 )
 
-var (
-	// TODO: config
-
-	TerminateBatchMax  uint64 = 100 // adjust based on real-world gas numbers, actors limit at 10k
-	TerminateBatchMin  uint64 = 1
-	TerminateBatchWait        = 5 * time.Minute
-)
-
 type TerminateBatcherApi interface {
 	StateSectorPartition(ctx context.Context, maddr address.Address, sectorNumber abi.SectorNumber, tok TipSetToken) (*SectorLocation, error)
 	SendMsg(ctx context.Context, from, to address.Address, method abi.MethodNum, value, maxFee abi.TokenAmount, params []byte) (cid.Cid, error)
@@ -38,11 +30,12 @@ type TerminateBatcherApi interface {
 }
 
 type TerminateBatcher struct {
-	api     TerminateBatcherApi
-	maddr   address.Address
-	mctx    context.Context
-	addrSel AddrSel
-	feeCfg  FeeConfig
+	api       TerminateBatcherApi
+	maddr     address.Address
+	mctx      context.Context
+	addrSel   AddrSel
+	feeCfg    FeeConfig
+	getConfig GetSealingConfigFunc
 
 	todo map[SectorLocation]*bitfield.BitField // MinerSectorLocation -> BitField
 
@@ -53,13 +46,14 @@ type TerminateBatcher struct {
 	lk                    sync.Mutex
 }
 
-func NewTerminationBatcher(mctx context.Context, maddr address.Address, api TerminateBatcherApi, addrSel AddrSel, feeCfg FeeConfig) *TerminateBatcher {
+func NewTerminationBatcher(mctx context.Context, maddr address.Address, api TerminateBatcherApi, addrSel AddrSel, feeCfg FeeConfig, getConfig GetSealingConfigFunc) *TerminateBatcher {
 	b := &TerminateBatcher{
-		api:     api,
-		maddr:   maddr,
-		mctx:    mctx,
-		addrSel: addrSel,
-		feeCfg:  feeCfg,
+		api:       api,
+		maddr:     maddr,
+		mctx:      mctx,
+		addrSel:   addrSel,
+		feeCfg:    feeCfg,
+		getConfig: getConfig,
 
 		todo:    map[SectorLocation]*bitfield.BitField{},
 		waiting: map[abi.SectorNumber][]chan cid.Cid{},
@@ -113,6 +107,11 @@ func (b *TerminateBatcher) processBatch(notif, after bool) (*cid.Cid, error) {
 		return nil, xerrors.Errorf("getting proving deadline info failed: %w", err)
 	}
 
+	cfg, err := b.getConfig()
+	if err != nil {
+		return nil, xerrors.Errorf("getting sealing config: %W", err)
+	}
+
 	b.lk.Lock()
 	defer b.lk.Unlock()
 	params := miner2.TerminateSectorsParams{}
@@ -193,11 +192,11 @@ func (b *TerminateBatcher) processBatch(notif, after bool) (*cid.Cid, error) {
 		return nil, nil // nothing to do
 	}
 
-	if notif && total < TerminateBatchMax {
+	if notif && total < cfg.TerminateBatchMax {
 		return nil, nil
 	}
 
-	if after && total < TerminateBatchMin {
+	if after && total < cfg.TerminateBatchMin {
 		return nil, nil
 	}
 
diff --git a/node/config/def.go b/node/config/def.go
index 94e87be3b..6419127d0 100644
--- a/node/config/def.go
+++ b/node/config/def.go
@@ -242,9 +242,13 @@ func DefaultStorageMiner() *StorageMiner {
 			WaitDealsDelay:            Duration(time.Hour * 6),
 			AlwaysKeepUnsealedCopy:    true,
 
-			AggregateCommits: true,
-			MinCommitBatch:   5, // todo: base this on some real numbers
-			MaxCommitBatch:   400,
+			AggregateCommits:   true,
+			MinCommitBatch:     1,        // we must have at least one proof to aggregate
+			MaxCommitBatch:     204,      // this is the maximum aggregation per FIP13
+			CommitBatchWait:    time.Day, // this can be up to 6 days
+			TerminateBatchMin:  1,        // same as above
+			TerminateBatchMax:  204,      // same as above
+			TerminateBatchWait: time.Day, // this can be up to 6 days
 		},
 
 		Storage: sectorstorage.SealerConfig{